Best Car Battery Chargers for Lead-Acid in 2026: 8 Picks Ranked by Specs
Compare 8 top-rated car battery chargers for lead acid batteries. We rank options by amperage, voltage support, and bank count to help you choose.
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Finding the best car battery chargers for lead acid requires matching your needs to specific technical capabilities. We compared 8 options ranked by their published specifications to help you choose wisely. The TowerTop 25A Max Pro 12V Charger leads this list because it delivers 25A of output for rapid charging and engine starting. This high amperage allows you to recover deeply discharged batteries quickly. Our selection process focused strictly on the data provided in each listing. We evaluated voltage support, amperage, and specialized features like desulfation. This guide helps you decide which charger fits your vehicle type and charging speed requirements.
Match Amperage to Your Battery Size
Charger output ranges from 8A to 50A. Select 8A for motorcycles or small vehicles, as seen with the NOCO GENIUS2X4. Choose 25A or more for cars and trucks, like the TowerTop 25A Max Pro. Higher amperage charges larger batteries faster. Match the spec to your vehicle type for efficient maintenance and reliable engine starts.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | TowerTop 25A Max Pro 12V Charger Best overall | fast charging and engine starting for 12V batteries | |
| 2 | NOCO GENIUS2X4 8A 4-Bank Charger Best premium | simultaneous charging of four 6V or 12V batteries | |
| 3 | Antigravity SC-10 10A Smart Charger Best budget | Versatile lead-acid and lithium charging with clear display | |
| 4 | TowerTop 25A Pro+ 6V/12V Charger Best cars | Fast charging standard 12V car batteries | |
| 5 | FirstPower Pro 8A 4-Bank Charger Best motorcycles | maintaining multiple small vehicle batteries | |
| 6 | Bosch C80-Li 15A Smart Charger Best 15a | IP65 protected 6V/12V lead-acid and lithium charging | |
| 7 | NOCO GENIUSPRO50 50A Black Charger Best 12v/24v | professional 24V systems and battery repair | |
| 8 | Ampeak 25A 12V Smart Charger Best trucks | fast 12V truck battery recovery |
The best fit for you
- You need rapid charging and engine start assistance – TowerTop 25A Max Pro 12V Charger – It provides 25A output and engine start features for fast recovery.
- You must charge four batteries at the same time – NOCO GENIUS2X4 8A 4-Bank Charger – Its four-bank design allows simultaneous maintenance of multiple 6V or 12V units.
- You want the most compact charger for small bikes – FirstPower Pro 8A 4-Bank Charger – It measures just 1.9 inches wide and supports multiple small battery types.
- You work with heavy-duty 24V commercial systems – NOCO GENIUSPRO50 50A Black Charger – It delivers 50A power and supports 6, 12, and 24V configurations.
TowerTop 25A Max Pro 12V Charger
Best for: fast charging and engine starting for 12V batteries
- Battery Type
- Lithium, Lead-Acid
- Voltage Compatibility
- 12V
- Charging Current
- 25A
- Battery Chemistry
- STD, GEL, AGM, Calcium, LiFePO4
- Engine Start Current
- 100A
- Operating Modes
- DC Supply, Winter, Repair
The TowerTop 25A Max Pro is a fully automatic 12V charger designed for lead-acid and lithium batteries. It delivers up to 25A of charging current, capable of handling a 100Ah battery in 3.5 hours. The unit includes an engine start aid providing 100A and a DC power supply mode. It features an LCD screen and six professional battery modes, including AGM, GEL, and LiFePO4 support.
- 25A max charging current for fast 12V battery replenishment
- 100A engine start current to jump-start vehicles
- DC power supply mode provides stable 14V output
- LCD screen displays real-time charging stages
- Supports AGM, GEL, and LiFePO4 battery chemistries
- 100A engine start current is lower than the 50A charger's higher peak capabilities
- 12V only voltage compatibility excludes 24V systems
- 3.95 pound weight is heavier than basic 2A trickle chargers
- You need a fast charger for large 12V lead-acid batteries
- You require an engine start aid for dead batteries
- You maintain multiple battery types like AGM or LiFePO4
- You need to charge 24V commercial vehicle batteries
- You want the absolute lightest portable charger available
- You only need a slow 2A trickle maintainer
Verdict: TowerTop 25A Max Pro 12V Charger is a high-output solution for users who need rapid charging and engine start assistance for 12V lead-acid and lithium batteries. It suits those who want a single device for maintenance, repair, and starting tasks.
NOCO GENIUS2X4 8A 4-Bank Charger
Best for: simultaneous charging of four 6V or 12V batteries
- Battery Type
- Lithium, Lead-Acid
- Voltage Compatibility
- 6V, 12V
- Charging Current
- 8A (2A per bank)
- Battery Chemistry
- AGM, Gel, SLA, VRLA, LiFePO4
- Number of Banks
- 4
- Operating Modes
- Charge, Maintain, Desulfate, Force Mode
The NOCO GENIUS2X4 charges four 6V or 12V lead-acid batteries simultaneously at 8A total (2A per bank). It includes desulfation and temperature compensation to protect battery health. This unit suits you if you need to maintain multiple vehicles or equipment at once. It handles deep discharge recovery and offers indefinite maintenance connection for safe, long-term storage.
- Charges four batteries simultaneously with 2A per bank
- Includes desulfation mode to reverse sulfation
- Temperature compensation prevents overcharging in heat
- Force Mode charges batteries down to 0 volts
- Lower total charging current of 8A compared to 15A or 25A competitors
- Heavier build at 7.78 pounds compared to lighter single-bank units
- Smaller 2A per-bank output limits speed for larger batteries
- You need to charge four 6V or 12V batteries at the same time
- You want desulfation features to restore battery health
- You require temperature compensation for reliable charging in varying climates
- You need to charge more than four batteries simultaneously
- You require a higher total charging current than 8A
- You prefer a lighter, more portable charger under 5 pounds
Verdict: The NOCO GENIUS2X4 8A 4-Bank Charger fits you if you need to maintain multiple 6V or 12V batteries simultaneously. Its four-bank design and desulfation features make it ideal for fleet or multi-vehicle owners who prioritize battery longevity over rapid charging speeds.
Antigravity SC-10 10A Smart Charger
Best for: Versatile lead-acid and lithium charging with clear display
- Battery Type
- Lithium, Lead-Acid, LiFePO4
- Voltage Compatibility
- 6V, 12V
- Charging Current
- 10A
- Battery Chemistry
- LiFePO4, AGM, FLA, GEL, WET, VRLA
- Operating Modes
- Power Supply, Recondition, Winter
- Color
- Black
The Antigravity SC-10 offers 10A charging for 6V and 12V lead-acid and lithium batteries. It features a large LCD display for real-time monitoring and supports AGM, FLA, GEL, and WET chemistries. This unit includes a BMS reset function for lithium batteries and a power supply mode. It is built with an IP65 weather-resistant housing for garage use. It suits users needing versatile chemistry support and clear diagnostics.
- 10A charging current supports batteries from 7Ah to 200Ah
- Large LCD digital display shows voltage, current, and charge level
- Supports LiFePO4, AGM, FLA, GEL, WET, and VRLA chemistries
- Includes BMS Wake-Up/Reset for protected lithium batteries
- IP65 weather-resistant housing for garage and shop environments
- 10A charging speed is lower than the 15A and 25A options on this list
- Maximum capacity support of 200Ah is lower than the 50A models' higher throughput potential
- Physical dimensions of 9.4 x 4.4 x 2.5 inches are bulkier than compact trickle chargers
- You need a charger that handles both lead-acid and LiFePO4 batteries
- You want a large LCD display for clear real-time monitoring
- You require a BMS reset function for modern lithium batteries
- You need charging speeds above 10A for faster battery recovery
- You are looking for a compact unit smaller than 9.4 inches in length
- You only need a basic 12V lead-acid charger without lithium support
Verdict: The Antigravity SC-10 10A Smart Charger fits users who need reliable support for both lead-acid and lithium chemistries with clear visual feedback. It is a solid choice for workshop environments where weather resistance and BMS management matter.
TowerTop 25A Pro+ 6V/12V Charger
Best for: Fast charging standard 12V car batteries
- Battery Type
- AGM, Lead-Acid, LiFePO4
- Voltage Compatibility
- 6V, 12V
- Charging Current
- 25A
- Battery Chemistry
- STD, GEL, AGM, Calcium, LiFePO4
- Engine Start Current
- 100A
- Operating Modes
- Repair, Winter, Desulfation
The TowerTop 25A Pro+ is a fully automatic smart charger for 6V and 12V lead-acid batteries. It delivers up to 25A of charging current and provides 100A for engine starting. The unit features an HD LCD screen and six professional modes, including AGM and GEL support. Its compact design weighs 3.95 pounds. This charger suits car owners who want fast charging speeds and clear status monitoring without complex setup.
- 25A max charging current for rapid battery replenishment
- 100A engine start current to jumpstart vehicles
- HD LCD screen displays real-time charging stages
- Six modes including AGM, GEL, and LiFePO4
- ETL certified with comprehensive safety protections
- Heavier build at 3.95 pounds compared to lighter competitors
- Lower peak output than 50A models in the guide
- Limited to 6V and 12V systems only
- You need a fast 25A charge for standard 12V car batteries
- You want visual confirmation of charging status via LCD
- You own AGM or GEL batteries requiring specific modes
- You require 24V charging for heavy-duty trucks
- You need more than 25A for large commercial batteries
- You prefer a completely silent, screen-less design
Verdict: TowerTop 25A Pro+ 6V/12V Charger offers robust 25A charging and 100A start current for standard automotive batteries. It fits drivers who prioritize fast charging speeds and clear digital feedback for their daily cars.
FirstPower Pro 8A 4-Bank Charger
Best for: maintaining multiple small vehicle batteries
- Battery Type
- AGM, Lead-Acid, LiFePO4, Gel
- Voltage Compatibility
- 6V, 12V
- Charging Current
- 8A
- Battery Chemistry
- Lead-Acid, AGM, Gel, LiFePO4
- Number of Banks
- 4
- Operating Modes
- Maintain, Trickle, Repair, Float
This 12V trickle charger handles six-volt and twelve-volt lead-acid batteries across four separate banks. You get two amps per bank, totaling eight amps. It includes repair modes for old batteries and temperature compensation to prevent overcharging. The compact unit fits motorcycles, ATVs, and lawn equipment. It is ideal for maintaining multiple vehicles simultaneously without complex setup.
- Four banks allow charging four batteries at once
- Eight amps total output for faster charging
- Includes battery repair and desulfation modes
- Temperature compensation prevents overcharging in heat
- Compact dimensions fit tight storage spaces
- Eight amps is lower than the 15A or 25A options on this list
- Two amps per bank limits speed for large car batteries
- No display screen for precise voltage monitoring
- You need to maintain four batteries at the same time
- You own motorcycles or small powersport vehicles
- You want a compact charger for seasonal equipment
- You need to charge large truck or RV batteries quickly
- You require high amperage for rapid charging
- You want to monitor voltage with a digital screen
Verdict: FirstPower Pro 8A 4-Bank Charger suits owners of multiple small vehicles who need simultaneous maintenance. It trades raw power for the convenience of four charging banks.
Bosch C80-Li 15A Smart Charger
Best for: IP65 protected 6V/12V lead-acid and lithium charging
- Battery Type
- Lithium, AGM, Lead-Acid, Gel
- Voltage Compatibility
- 6V, 12V
- Charging Current
- 15A
- Battery Chemistry
- LiFePO4, Lead-Acid, AGM, EFB, GEL, SLI
- Boost Current
- 20A
- Operating Modes
- Fast Charge, Maintenance, Power Supply
The Bosch C80-Li delivers 15 amps of charging current for 6V and 12V lead-acid, AGM, EFB, Gel, and SLI batteries. It also handles LiFePO4 lithium chemistry. The unit includes a 20A boost mode for faster recovery. You get maintenance and power supply modes to preserve vehicle settings. Its IP65 rating protects against splashes and dust, making it suitable for outdoor or garage use.
- 15A standard charging current for efficient power delivery
- 20A boost mode for rapid battery recovery
- IP65 splash and dust proof enclosure
- Supports 6V and 12V lead-acid and LiFePO4 batteries
- Power supply mode maintains vehicle electronics during service
- 15A charging current is lower than the 25A options on this list
- 3.3-pound weight is heavier than lighter compact chargers
- Limited to 6V and 12V systems, excluding 24V vehicles
- You need a durable charger with IP65 splash protection
- You require support for both 6V and 12V lead-acid batteries
- You want a 20A boost mode for fast charging
- You need a 25A charger for faster bulk charging
- You require 24V compatibility for heavy-duty trucks
- You prefer a lighter unit under 3 pounds
Verdict: Bosch C80-Li 15A 6V/12V Charger offers robust IP65 protection and 20A boost capability for users needing reliable 6V and 12V maintenance. It fits buyers who prioritize durability and lithium support over maximum amperage.
NOCO GENIUSPRO50 50A Black Charger
Best for: professional 24V systems and battery repair
- Battery Type
- Lithium, Lead-Acid
- Voltage Compatibility
- 6V, 12V, 24V
- Charging Current
- 50A
- Battery Chemistry
- AGM, Gel, SLA, VRLA, LiFePO4
- Operating Modes
- Charge, Maintain, Power Supply, Repair
- Color
- Black
The NOCO GENIUSPRO50 is a high-output charger designed for professionals needing speed and versatility. It delivers 50A on 6V and 12V systems, and 25A on 24V setups. This unit supports lead-acid and LiFePO4 batteries, offering Charge, Maintain, Power Supply, and Repair modes. Its robust build includes a thermal sensor for precision charging. You will appreciate the durable cables and included case for professional use.
- Delivers 50A charging current for 6V and 12V batteries
- Supports 6V, 12V, and 24V battery systems
- Includes Power Supply mode for diagnostic testing
- Features Repair mode to reverse sulfation
- Includes a protective EVA carrying case
- Weighs 12.1 pounds, making it heavier than many portable options
- Measures 16.9 inches in length, requiring more storage space
- Provides only 25A on 24V systems, half the 12V output
- You need to charge 24V heavy-duty batteries
- You require a power supply mode for ECU flashing
- You want to repair deeply discharged lead-acid batteries
- You need a lightweight charger for frequent travel
- You only charge standard 12V passenger vehicle batteries
- You prefer a compact unit for small storage areas
Verdict: The NOCO GENIUSPRO50 50A 6/12/24V Charger is a heavy-duty tool for professionals who need high amperage and multi-voltage support. It fits workshops where 24V systems or battery restoration are common.
Ampeak 25A 12V Smart Charger
Best for: fast 12V truck battery recovery
- Battery Type
- Lead-Acid, LiFePO4
- Voltage Compatibility
- 12V
- Charging Current
- 25A
- Battery Chemistry
- Lead-Acid, LiFePO4, Wet, MF, EFB
- Operating Modes
- Winter, Pulse Repair
- Recommended Use
- Trucks
The Ampeak 25A charger delivers high current for rapid lead-acid battery recovery. It features an 8-stage program and 6 modes, including winter mode and pulse repair. The LCD display tracks progress. This unit suits truck owners needing fast charging for 100Ah batteries. It supports wet, MF, and EFB types. The 25A output charges faster than standard trickle models.
- 25A charging current for rapid recovery
- 8-stage smart charging program
- LCD display shows charging stages
- Winter mode for cold starts
- ETL certified for safety
- 12V only limits use for 24V truck systems
- 6 modes fewer than some multi-chemistry chargers
- 8x6x6 inch size is bulkier than slim models
- You need fast charging for heavy truck batteries
- You want clear LCD feedback on charge status
- You operate vehicles in cold winter conditions
- You drive trucks requiring 24V charging
- You need a compact charger for tight spaces
- You require multi-voltage support for multiple vehicles
Verdict: Ampeak 25A 12V Smart Charger offers high power for truck batteries. It fits users who prioritize speed and cold-weather reliability over multi-voltage flexibility.
Specifications side by side
| Spec | TowerTop 25A Max Pro 12V Charger | NOCO GENIUS2X4 8A 4-Bank Charger | Antigravity SC-10 10A Smart Charger | TowerTop 25A Pro+ 6V/12V Charger | FirstPower Pro 8A 4-Bank Charger | Bosch C80-Li 15A Smart Charger | NOCO GENIUSPRO50 50A Black Charger | Ampeak 25A 12V Smart Charger |
|---|---|---|---|---|---|---|---|---|
| Voltage Compatibility | 12V | 6V, 12V | 6V, 12V | 6V, 12V | 6V, 12V | 6V, 12V | 6V, 12V, 24V | 12V |
| Charging Current | 25A | 8A (2A per bank) | 10A | 25A | 8A | 15A | 50A | 25A |
| Battery Chemistry | STD, GEL, AGM, Calcium, LiFePO4 | AGM, Gel, SLA, VRLA, LiFePO4 | LiFePO4, AGM, FLA, GEL, WET, VRLA | STD, GEL, AGM, Calcium, LiFePO4 | Lead-Acid, AGM, Gel, LiFePO4 | LiFePO4, Lead-Acid, AGM, EFB, GEL, SLI | AGM, Gel, SLA, VRLA, LiFePO4 | Lead-Acid, LiFePO4, Wet, MF, EFB |
| Engine Start Current | 100A | – | – | 100A | – | – | – | – |
| Number of Banks | – | 4 | – | – | 4 | – | – | – |
| Boost Current | – | – | – | – | – | 20A | – | – |
| Operating Modes | DC Supply, Winter, Repair | Charge, Maintain, Desulfate, Force Mode | Power Supply, Recondition, Winter | Repair, Winter, Desulfation | Maintain, Trickle, Repair, Float | Fast Charge, Maintenance, Power Supply | Charge, Maintain, Power Supply, Repair | Winter, Pulse Repair |
| Control Type | Fully Automatic | – | – | Fully Automatic | Fully Automatic | – | – | – |
| Color | 25A Max Pro | Black | Black | – | – | blue | Black | Orange |
| Recommended Use | – | – | – | Cars | Motorcycles | – | – | Trucks |
| Voltage | 12V | 12V | 12V | 12V | 12V | 12V | 12V/24V | 12V |
| Features | Desulfator, Engine Start, Winter Mode | Desulfator, Temperature Compensation | – | Desulfator, Engine Start, Battery Repair | Desulfator, Temperature Compensation | – | Desulfator, Temperature Compensation | Desulfator, Winter Mode |
| System Coverage | Check Engine | – | – | Check Engine | – | – | – | – |
| Reset Functions | – | – | BMS Reset | – | – | – | – | – |
| Battery Type | Lithium, Lead-Acid | Lithium, Lead-Acid | Lithium, Lead-Acid, LiFePO4 | AGM, Lead-Acid, LiFePO4 | AGM, Lead-Acid, LiFePO4, Gel | Lithium, AGM, Lead-Acid, Gel | Lithium, Lead-Acid | Lead-Acid, LiFePO4 |
| Amperage | – | – | – | – | – | 15A | – | – |
| Dimensions | 6.1 × 8.46 × 6.89 inches | 6.97 × 5.31 × 10.8 inches | 9.4 × 4.4 × 2.5 inches | 6.1 × 8.46 × 6.89 inches | 5.2 × 1.9 × 4.6 inches | 8.4 × 4 × 2.5 inches | 16.9 × 9.92 × 7.76 inches | 8 × 6 × 6 inches |
| Weight | 3.95 pounds | 7.78 pounds | – | 3.95 pounds | – | 3.3 pounds | 12.1 pounds | – |
| Model | BC0253-1 | GENIUS2X4 | SC-10 | – | F2000X4 | C80-Li | GENIUSPRO50 | – |
| Size | – | 8A (2A per Bank) | – | – | – | – | 50A | 25A Pro |
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How to Choose the Right Charger
Check Voltage Compatibility
You must match the charger voltage to your battery system. Most standard cars use 12V systems, which fits the TowerTop 25A Max Pro. Trucks and larger vehicles often require 12V or 24V support. The NOCO GENIUSPRO50 handles 6V, 12V, and 24V options. If you own a motorcycle, 12V is usually sufficient. Always verify the voltage rating before purchasing. Using the wrong voltage can damage the battery or the charger. Check the label on your battery for the correct voltage specification.
Assess Amperage Needs
Amperage determines how quickly your battery charges. Higher amps mean faster charging but require a larger battery to handle the current. The TowerTop 25A Max Pro offers 25A for rapid recovery of car batteries. For smaller batteries, like those in motorcycles, the FirstPower Pro 8A is adequate. The NOCO GENIUS2X4 splits 8A across four banks, so each bank provides only 2A. Match the amperage to your battery size. Too much current can overheat small batteries, while too little takes too long.
Verify Battery Chemistry
Not all chargers support every battery type. You need a charger that matches your specific chemistry. The Antigravity SC-10 supports Lead-Acid, Lithium, and LiFePO4 chemistries. The Bosch C80-Li also handles AGM, Gel, and Lithium types. Standard Lead-Acid batteries are common in most cars. If you have an AGM or Gel battery, ensure the charger has the correct profile. Using a standard charger on an AGM battery may cause damage. Check the attributes list for compatibility with your specific battery type before buying.
Consider Portability Size
The physical size of the charger affects where you can store it. The Bosch C80-Li is compact at 4 inches wide and 2.5 inches high. The Antigravity SC-10 is also small, measuring 4.4 inches wide. Larger units like the NOCO GENIUSPRO50 are bulky and heavy. It weighs 12.1 pounds and measures 16.9 inches long. If you need to store the charger in a glove box, choose a smaller model. For a garage shelf, size matters less. Measure your storage space before selecting a unit.
Look for Special Features
Special features can extend battery life and improve safety. Desulfation helps repair lead-acid batteries by removing sulfate crystals. The TowerTop 25A Max Pro includes a desulfator and engine start mode. Winter Mode is available on the TowerTop and Ampeak chargers for cold weather. Temperature compensation adjusts charging based on ambient heat. The NOCO GENIUS2X4 includes temperature compensation. These features protect your battery from damage. Check the feature list to see if you need repair or weather-specific functions.
Frequently asked questions
Can I use a 12V charger on a 24V system?
Most standard 12V chargers, like the TowerTop 25A Max Pro, cannot safely charge 24V systems. You need a multi-voltage unit for that. The NOCO GENIUSPRO50 supports 6, 12, and 24V outputs. It is designed for professional workshops where 24V trucks or heavy equipment are common. Using the wrong voltage can damage your battery or the charger.
Do these chargers support AGM and gel batteries?
Yes, several options here support AGM and gel chemistries. The Antigravity SC-10 handles AGM, Lead-Acid, LiFePO4, and Gel types. The Bosch C80-Li also covers AGM, Lead-Acid, and Gel. Always check the attributes list. Some models, like the Ampeak 25A, focus on standard Lead-Acid and LiFePO4, so verify compatibility before buying.
What is the best charger for motorcycles?
The FirstPower Pro 8A 4-Bank Charger is built for motorcycles. It is recommended specifically for motorcycle use. Its compact size, measuring 1.9 inches wide, fits small spaces. It offers four banks to maintain multiple small vehicle batteries simultaneously. This makes it ideal for riders with several bikes or small engines to keep ready.
Can I jump start a car with these chargers?
Some models include engine start features for jump-starting. The TowerTop 25A Max Pro provides 25A output and engine start assistance. The TowerTop 25A Pro+ offers 100A start current for standard automotive batteries. These features help recover deeply discharged batteries quickly. Other models, like the NOCO GENIUS2X4, focus on maintenance rather than starting power.
Is there a weatherproof charger for outdoor storage?
The Bosch C80-Li 15A Smart Charger offers IP65 protection. This rating makes it resistant to dust and water jets, suitable for outdoor or harsh environments. It supports 6V and 12V lead-acid and lithium batteries. If you store vehicles in garages or outside, this durability ensures the charger remains functional despite dust or moisture exposure.
How do I charge four batteries at once?
You need a multi-bank charger with separate outputs. The NOCO GENIUS2X4 has four banks, each delivering 2A for a total of 8A. The FirstPower Pro 8A also features four banks for simultaneous maintenance. These units let you keep multiple 6V or 12V batteries charged at the same time. This is efficient for fleets or workshops.
Which charger is best for truck batteries?
The Ampeak 25A 12V Smart Charger is recommended for trucks. It offers 25A output for fast recovery of large truck batteries. It includes winter mode for cold-weather reliability. Trucks often have larger capacities, so higher amperage helps restore charge faster. This model prioritizes speed and durability for heavy-duty vehicle maintenance.
See also
Where these figures come from
The price, the list price it is compared against and the specifications on this page are read from the Amazon product listing. Scores are out of 10, based on listed specifications and buyer feedback, and no product here has been handled or measured by us. The award ribbons are calculated across the products in this guide only, and each one states the figure it was based on.
