70.4V (72V) 105Ah Golf Cart Battery Complete Kit - Lithium (LiFePO4)
Complete 72V lithium golf cart conversion kit
Epoch 72V 105Ah Lithium Golf Cart Conversion Kit: Maximum Performance
Upgrade your 72V cart with a high-output LiFePO4 power system engineered for stronger acceleration, steadier voltage, and extended range.
The Epoch 72V 105Ah lithium golf cart battery kit delivers 7.39kWh (7,392Wh) of stored energy in one complete conversion package. Built for custom carts and performance-minded drivers, this Big Box Series kit (model BB72105A-Kit) replaces a bank of six lead-acid batteries with one 70.4V LiFePO4 battery and includes a 72V 15A lithium charger, a battery gauge, and a 12V converter, with Epoch Li-Ion app monitoring and IP67 protection.
Complete kit value
One Battery Replaces a Six-Battery Lead-Acid Bank
A lightweight 72V battery upgrade built to transform cart performance.
Heavy lead-acid banks make 72V carts feel sluggish, especially under hard acceleration, hill climbs, or passenger load. Replacing six bulky lead-acid batteries with one lithium golf cart conversion kit can remove significant weight from the chassis, improving power-to-weight ratio, handling feel, braking load, and overall drivability.
Because LiFePO4 delivers a flatter voltage curve than lead-acid, the cart receives more consistent power as the battery discharges. That means less voltage sag, stronger pull under load, and a more consistent driving experience from the beginning of the ride to the end.
Consistent Power and Less Voltage Sag
The LiFePO4 flat voltage curve helps maintain stronger power delivery compared with lead-acid batteries that steadily lose voltage as they drain. It is a major advantage for drivers who want reliable torque, speed consistency, and predictable performance.
The Complete High-Performance Bundle
This 72V golf cart conversion kit includes the battery, a 72V 15A lithium charger, a battery gauge, and a 12V converter: the core components for a cleaner lithium conversion. Mounting brackets are not included, and only authorized mechanics or technicians should install the battery.
Smart Bluetooth App Monitoring
Built-in Bluetooth connects to the free Epoch Li-Ion app for iOS and Android, so you can check state of charge, voltage, current flow, temperature, and battery status from your phone and install firmware updates over the air.
Built for 72V Performance Carts
High current output, complete kit hardware, and sealed durability.
Performance-Focused Golf Cart Applications
Designed for high-output 72V lithium golf cart conversions.
- ✓72V golf cart conversion and lithium replacement projects.
- ✓Custom carts where speed, torque, and hill-climbing response matter.
- ✓Club Car, EZGO, Yamaha, and other 72V-compatible platforms when fitment and system requirements match.
- ✓Aftermarket controller and motor systems configured within the battery’s published BMS limits.
- ✓Neighborhood electric vehicles and utility vehicles where the application requirements match the battery's specifications.
- ✓12V lights, audio, and cart accessories through the included 12V converter.
- ✓Parallel expansion to two batteries (210Ah) for more runtime; series connection is not supported.
Technical Specifications
Clean technical reference for the Epoch 72V 105Ah lithium golf cart battery kit.
| General | |
|---|---|
| Brand | Epoch Batteries |
| Model / SKU | BB72105A-Kit (confirm the model on the battery label) |
| Series | Big Box Series / golf cart complete kit |
| Battery type | LiFePO4 golf cart battery, 72V class |
| Included accessories | 72V 15A lithium charger, battery gauge, and 12V converter |
| Not included | Mounting brackets (secure the battery with hold-down hardware rated for 132 lb / 60 kg) and a main fuse or DC-rated breaker (install it as close as practical to the battery positive terminal) |
| Chemistry | LiFePO4 / Lithium iron phosphate |
| Cell type | Prismatic LiFePO4 |
| Cell configuration | 22S1P (22 cells in series) |
| Bluetooth | Yes — Epoch Li-Ion app (iOS and Android) |
| Software updates | Yes — over the air (OTA) through the Epoch Li-Ion app |
| Self-heating | No |
| Low-temperature charge protection | Yes |
| Cycle life | 3,500+ cycles |
| Warranty | 11-year limited warranty: free repair or replacement in Years 1–5, then 40% off MSRP on a replacement battery in Years 6–11. Register within 90 days or keep your proof of purchase. |
| Voltage and capacity | |
| System voltage class | 72V golf cart system |
| Nominal voltage | 70.4V (72V class) |
| Nominal capacity | 105Ah |
| Energy stored | 7.39kWh (7,392Wh) nominal |
| Operating voltage range | 55.0V – 79.2V |
| Maximum charge voltage | 79.2V |
| Power-down state | Any cell below 2.2V |
| Self-discharge | 3% per month |
| Discharge and charge ratings | |
| Maximum continuous discharge | 250A |
| Peak discharge | 500A for up to 15 seconds; 1,000A for up to 2 seconds |
| Maximum continuous charge | 100A |
| Peak charge / regen | 500A for up to 15 seconds (regenerative braking) |
| C-rates | 250A discharge = 2.38C; 100A charge = 0.95C (1C = 105A) |
| Series and parallel configuration | |
| Parallel connections | Max 2 batteries in parallel |
| Maximum expanded capacity | 210Ah / 14.784kWh |
| Series connections | Not supported (72V system class) |
| Temperature | |
| Charge temperature range | 0°C to 55°C / 32°F to 131°F (not self-heated; the BMS blocks charging outside this range) |
| Discharge temperature range | -10°C to 55°C / 14°F to 131°F |
| Recommended storage temperature | 0°C to 35°C / 32°F to 95°F, up to 12 months |
| Storage temperature (up to 1 month) | -20°C to 55°C / -4°F to 131°F |
| Dimensions and mechanical | |
| Dimensions | 21.7 in L × 13.4 in W × 9.9 in H (550 × 340 × 250 mm) |
| Weight | 132 lb (60 kg) |
| Case material | Stainless steel |
| Enclosure protection | IP67 per IEC 60529: dust-tight and protected against temporary immersion (1 m, 30 min); do not pressure-wash |
| Terminal type | M8 female |
| Controls and ports | On/off switch, communication port, vent, positive and negative terminals |
| Recommended charging settings | |
| Charger | 72V 15A lithium charger (included) |
| Charge time | About 7 hours from empty with the included charger |
| Required charger type | Any other charging source must be a 72V-class LiFePO4 charger programmed with these settings |
| Maximum continuous charge current | 100A |
| Bulk / absorption voltage | 78.1V – 79.2V |
| Absorption end condition | Charge current ≤ C/20 (5.25A) or 15 minutes, whichever comes first |
| Float voltage | Disabled preferred, or 73.3V – 74.8V |
| Re-bulk voltage | 72.6V |
| Temperature compensation | 0 mV/°C (off) |
| Equalization | Disabled |
| Battery charge temperature range | 0°C to 55°C / 32°F to 131°F |
| BMS high-voltage cutoff | 79.2V |
| SoC recalibration voltage | 79.2V |
| Charger restart | Below about 95% state of charge, if the included charger stays connected |
| BMS protection | |
| Protection functions | Over-voltage, under-voltage, over-current, and short-circuit protection; charge, discharge, ambient, and MOSFET temperature protection |
| Cell balancing | Integrated; cell-unbalance alarm |
| Low-charge warning | Buzzer and flashing gauge warning below 20% state of charge |
| Compliance and shipping | |
| Cell-level certifications | UL 1642; IEC 62619:2022 (the cells used in this battery, not the complete battery assembly) |
| Product | CE; RoHS |
| Shipping classification | UN 38.3 |
| IP rating | IP67 per IEC 60529 |
IP67 Waterproof Durability
Fully dustproof and protected for rugged cart environments.
The IP67 enclosure is dust-tight and protected against temporary immersion up to 1 meter for 30 minutes. IP67 covers dust and temporary immersion only: do not pressure-wash the battery, avoid locations where water can pool around terminals or connectors, route cables properly, mount the battery securely, and inspect the battery and connectors after any immersion.
Epoch 72V 105Ah Golf Cart Battery FAQs
Common questions about speed, range, charging, installation, Bluetooth, and lithium conversion compatibility.
Will upgrading to this 72V lithium battery actually make my golf cart faster?
Upgrading to this 72V lithium golf cart battery can noticeably improve acceleration, hill-climbing feel, and power consistency by removing significant lead-acid weight and maintaining a flatter LiFePO4 voltage curve as the battery discharges. Actual top speed depends on your cart, controller, motor, tire size, programming, terrain, and total load.
Can this battery handle upgraded aftermarket motors and controllers?
Yes, this kit is built for high-performance 72V golf cart applications with a 250A maximum continuous discharge rating, 500A for up to 15 seconds, and 1,000A for up to 2 seconds. Always confirm your controller settings, motor demand, cable sizing, and fuse protection stay within Epoch's published BMS limits.
What kind of range can I expect from the 105Ah capacity?
Range and speed depend on the full cart build: cart weight, passenger load, tire size, terrain, speed, controller tune, and driving habits. Performance-focused users often target 40 to 50 miles in favorable conditions. For more runtime, two matched batteries can be connected in parallel for 210Ah and 14,784Wh.
Do I need to buy a separate charger for this 72V lithium kit?
No. This complete 72V golf cart conversion kit includes a 72V 15A lithium charger, along with a battery gauge and 12V converter, and the included charger charges the battery from empty in about 7 hours. Stop using lead-acid chargers unless they are specifically approved and programmed for this battery's LiFePO4 charging requirements.
How long does it take to charge, and how often should I charge it?
About 7 hours from empty with the included 72V 15A lithium charger. Charge after each day's use, or at least once a week with occasional use, and avoid letting the state of charge fall below 20%. If the charger stays connected, it restarts charging when the state of charge drops below about 95%, but disconnect it once the battery is full rather than leaving it plugged in for long periods.
Can I charge the battery in freezing weather?
No. This battery is not self-heated, and the BMS blocks charging outside 0°C to 55°C (32°F to 131°F), so let a cold battery warm above freezing before charging. It can discharge from -10°C to 55°C (14°F to 131°F).
How is this lithium conversion kit installed?
Installation should be done by an authorized mechanic or technician, following the steps in the user manual: remove the entire lead-acid bank, prepare hold-down hardware rated for the battery's 132 lb (60 kg) weight (mounting brackets are not included), install the charger, mount the battery gauge (and the on/off switch, if supplied) on the dashboard, route the wiring harness, secure the battery, connect the charger and the cart's main cables observing polarity, and install the 12V converter for the 12V accessory circuits. Then turn the battery on, confirm the gauge shows the state of charge, and charge it before first use if the charge is low. A main fuse or DC-rated breaker close to the battery positive terminal is required and is not part of the kit.
Can I connect two 72V 105Ah kits together for more range?
Yes, in parallel only. This model supports up to two batteries in parallel, which create a 72V-class bank with 210Ah of capacity and 14.784kWh of stored energy. Do not wire these batteries in series. Use matched BB72105A-Kit batteries of similar age, condition, and firmware at the same state of charge, with equal-length cables and a fuse on each battery branch.
Does this 72V kit include Bluetooth monitoring?
Yes. The battery's built-in Bluetooth connects to the free Epoch Li-Ion app for iOS and Android, so you can check state of charge, voltage, current flow, temperature, and battery status from your phone and install firmware updates over the air. The included battery gauge shows the state of charge and warnings on the dashboard.
Is the battery waterproof for outdoor golf cart use?
Yes. The battery is rated IP67, meaning it is dust-tight and protected against temporary immersion in water up to 1 meter for 30 minutes. IP67 covers dust and temporary immersion only, so do not pressure-wash the battery, install it securely, avoid locations where water can pool around terminals or connectors, and inspect it after any immersion.
Can I mix this 72V lithium kit with my existing lead-acid batteries?
No. Do not mix lithium and lead-acid batteries in the same golf cart battery bank. Their voltage curves, charging requirements, and internal resistance are different. Replace the lead-acid bank completely with the lithium kit and use compatible charging equipment.
Shipping times are in business days.
Please allow for 5-10 business days processing and shipping. You may receive your products in multiple shipments and packages. Currently we only ship to the Continental 48 states.
Additional shipping charges and requirements may apply to those outside the 48 states.
