Eco Battery GEN3 48V 105Ah Skinny Lithium Bundle for Yamaha G19 / G22 is a complete lithium iron phosphate (LiFePO4) conversion kit designed for the Yamaha G19 and G22 golf cart. The Skinny form factor fits the longer, narrower battery tray layout found in these models, replacing the entire set of lead-acid batteries with a single lithium unit. The bundle includes every component for a complete installation: battery, CAN charger, 12V DC converter, LCD state-of-charge meter, locking charge port, mounting hardware, and remote wake-up button.

Consistent power from the first hole to the last. Lead-acid batteries lose voltage progressively as they discharge the cart slows down on hills and feels sluggish toward the end of a round. LiFePO4 chemistry holds a flat voltage curve across the full discharge cycle. The cart delivers the same power at 20% charge as it does at 90%.

One battery replaces all of them. The Yamaha G19 and G22 typically carry six 8-volt lead-acid batteries. This single 113 lb Skinny unit replaces all six, removing over 200 lbs from the battery compartment. Less weight means better acceleration, improved hill performance, and a noticeable difference in how the cart handles.

CAN communication between battery and charger. The included 15A CAN charger communicates directly with the battery's BMS in real time during every charge cycle exchanging cell-level data, not just voltage and current. This allows the system to charge more accurately, protect cells more precisely, and extend the service life of both the battery and the charger. The charger shuts off automatically at full charge and does not require any input from the user.

Zero maintenance from installation day forward. No watering, no equalization charges, no terminal cleaning, no acid checks. The BMS monitors and balances every cell automatically. Firmware updates are pushed wirelessly through the Eco Battery mobile app via Bluetooth the battery improves over time without any action required.

Features

• Compatible with Yamaha G19 (1996–2002) and Yamaha G22 (2003–2007) both 48V models. The Skinny form factor fits the longer, narrower battery tray found in these carts.
• Single-battery replacement one 113 lb unit replaces the full set of six 8-volt lead-acid batteries, removing over 200 lbs from the cart and simplifying the battery area to a single connection point.
• Grade-A prismatic LiFePO4 cells lithium iron phosphate chemistry, thermally stable and non-combustible under normal operating conditions. Certified to UN38.3 and UL1642 Cell standards.
• 5,376Wh of usable energy 105Ah at 51.2V nominal. Driving range of approximately 40 to 45 miles per charge under typical conditions. Reserve capacity is 252 minutes at a 25A draw.
• Flat voltage discharge curve consistent power output from full charge to near-empty. No power drop on hills, no sluggishness on the back nine.
• IP67-rated enclosure sealed against dust and capable of withstanding temporary water immersion. Suitable for all-weather use. Do not pressure wash.
• Powder-coated steel shell durable construction rated for the vibration and physical demands of golf cart use on varied terrain.
• Proprietary Eco Battery BMS monitors and protects against pack over-voltage, pack under-voltage, cell under-voltage, cell over-temperature, BMS over-temperature, short circuit, and over-current. Charging freeze protection activates below 32°F.
• Power Save Mode battery enters Power Save automatically after extended inactivity. Activates after 7 days when SOC is 20–100%, or after 24 hours when SOC is 0–19%. Press the remote wake-up button to exit.
• CAN communication protocol real-time data exchange between battery and charger for precision charge management and accurate state-of-charge reporting.
• Bluetooth and over-the-air firmware updates pair with the free Eco Battery mobile app (iOS and Android) to monitor voltage, state of charge, current, and cell temperature. Firmware updates delivered wirelessly.
• LCD state-of-charge meter included displays battery voltage, SOC percentage (green 100–50%, white 49–20%, red 19–0%), and charge/discharge current. No calibration required data comes directly from the BMS.
• Remote wake-up button included powers the battery on or wakes it from Power Save Mode without accessing the battery compartment. Can only power the battery ON cannot power it OFF.
• Auto charger wake-up battery wakes automatically when the charger is connected.
• Low self-discharge rate 1% per month. Store seasonally without significant charge loss. Charge at least once every 6 months during long-term storage.
• Parallel connectable up to two units can be connected in parallel for extended range.
• Zero maintenance no watering, no equalization charges, no terminal cleaning, no acid management.
• Patented design US Patent D975,644 S and US D1,001,070 S.

What's Included

This is a complete bundle. Every component for a standard stock Yamaha G19 or G22 installation is included. No additional purchases are required for a stock cart.

The free Eco Battery mobile app (iOS and Android) is required to access Bluetooth monitoring and over-the-air firmware updates. Visit ecobattery.com/quickstart for installation guides. Register your battery at ecobattery.com/register within 60 days of purchase to activate the full-duration limited warranty.

Tech Specs

Compatibility

This bundle is designed for the Yamaha G19 (1996–2002) and Yamaha G22 (2003–2007). Both are 48-volt golf cart models that share the same longer, narrower battery tray layout. The Skinny form factor and included mounting hardware are configured around this tray.

How to confirm your model year:

For Yamaha G19 and G22 models, the serial number is located in the glove compartment on the driver's side of the vehicle. Contact us with your serial number and we will confirm compatibility before you order.

12V accessories:

The included DC-DC 12V converter (A-1272) is required for any G19 or G22 with 12V accessories lights, horn, USB ports, turn signals. This converter is included in the bundle and must be connected as part of the installation. Without it, 12V accessories will not function after the lead-acid batteries are removed.

This bundle does not fit:

• Yamaha G1 through G16 36V system, requires a completely different product
• Yamaha Drive / G29 (2007–2016) and Drive2 (2017+) these require the Eco Battery Thru-Hole bundle
• Gas-powered Yamaha golf carts
• Yamaha carts with factory-installed OEM lithium battery systems
• EZGO, Club Car, or other brands separate model-specific bundles available

Not sure which Yamaha model you have? Contact us with your serial number and we will confirm the correct bundle before you order.

Use and Care

Daily use:

• Charge the battery daily to keep it fully charged and ready for use.
• The battery does not need to be turned off after each use. Leave the power button on and the charger connected if the cart will be used within 15 days.
• Avoid running the battery below 20% state of charge. Monitor the SOC meter as you would a fuel gauge.
• Partial charges are acceptable at any time and do not harm the battery. LiFePO4 has no memory effect.
• The charger is not a float charger. It will not hold the battery at 100% indefinitely this is normal. The SOC may drop as low as 90% before the charger restarts a new cycle.

Storage:

• For storage beyond 15 days: charge above 50%, disconnect the charger AC power cord, and turn the battery off.
• Charge the battery at least once every 6 months during extended storage.
• After long-term storage, fully charge before use SOC may drift during storage and a full charge re-calibrates the BMS.
• If storing below -4°F, remove the battery from the cart and store in a location above -4°F.

Cold weather:

• The battery discharges down to -20°F (-29°C). Driving in cold weather is supported.
• The battery will not accept a charge below 32°F the BMS freeze protection activates automatically. This is a protective feature, not a defect.
• Performance and range decreases in cold temperatures are normal and expected.

Cleaning:

• Do not pressure wash the battery. Pressure washing can damage the lid seal and is not covered under the warranty policy.
• Do not use chemical cleaning agents of any kind.
• Clean by blowing off with a leaf blower or wiping with a clean, damp cloth.

FAQs