Big Box Series
Capacity: 105Ah
Configuration: Club Car DS
Dust-tight and protected against temporary immersion to 1 m for 30 minutes.
Over 9 years at one full cycle a day. Rated at the depth of discharge, charge rate and temperature stated on the datasheet, to its end-of-life capacity.
Charge, voltage and temperature on your phone in the Epoch Li-Ion app.
Guards against overcharge, over-discharge, overcurrent and short circuit.
Lithium iron phosphate has a far lower thermal-runaway risk than other lithium chemistries. The BMS adds over-temperature and low-temperature charge protection.
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Replaces the whole lead-acid bank
51.2V (48V class), 105Ah and 5.38kWh in a compact stainless-steel IP67 case with built-in Bluetooth and BMS. 200A continuous, 700A peak for up to 2 seconds. 15.8 × 11.1 × 10.9 in, 99 lb.
Onboard LiFePO4 charger
Waterproof, with a LiFePO4 charge profile and AC input 85–265V. Mounts in the battery compartment and charges the battery from empty in about 7 hours; you plug in through the cart's charge port, from outside the cart.
Included with the charger
Plugs into the cart's charge port and a standard 120V AC outlet, so you can charge from outside the cart.
Dash mount
Shows state of charge from 0 to 100%, battery voltage, current and temperature at a glance, and shows warnings when the BMS raises an alarm.
With wiring harness
Turn the battery on and off from the dash. The 6 ft harness links the battery's communication port to the switch, gauge and charger.
Stretched cart? Get the 13 ft harness
For 12V accessories
Fused, with a key-on (enable) wire for the cart's key switch. Runs 12V headlights, light bars, radios and USB outlets from the 48V battery: input 40–90V, regulated 13.5V output, 25A maximum load.
Matched to your cart
Replaces the cart's factory lead-acid charging receptacle and feeds AC power to the onboard lithium charger. Replacing the original receptacle is required for safety.
Matched to your cart
Secure the battery in the compartment. Choose Club Car DS or Other when you order.
Free for iOS and Android
Connects over Bluetooth to show state of charge, voltage, current, temperature, battery health and warnings on your phone, and installs firmware updates over the air.
Compact 48V lithium golf cart conversion
A compact 48V golf cart lithium conversion kit for the Club Car DS and other compatible 48V carts: the Mini battery, a 48V 15A lithium charger with a 10 ft heavy-duty extension cord, a digital Bluetooth battery gauge, a 6 ft remote on/off power switch, a 48V to 12V step-down converter, a cart-specific charge port plug, cart-specific mounting brackets and free Bluetooth app access.
The Epoch 48V 105Ah MINI golf cart battery complete kit (model BB51105A_MINI-kit-1, Big Box Series) converts a Club Car DS or another compatible 48V golf cart from lead-acid to lithium without sourcing every part separately. One 51.2V (48V class), 105Ah, 5.38kWh LiFePO4 battery in a compact 15.8 × 11.1 × 10.9 in Mini case replaces six 8V lead-acid batteries and frees under-seat space. The kit adds a 48V 15A waterproof lithium charger with a 10 ft heavy-duty extension cord, a digital Bluetooth battery gauge that reads state of charge from 0 to 100%, a 6 ft remote on/off power switch with wiring harness, a 48V to 12V step-down converter rated 25A, a cart-specific charge port plug to replace the factory charging receptacle, mounting brackets for your cart configuration (Club Car DS or Other) and free access to the Epoch Li-Ion app.
Choose Club Car DS for a Club Car DS cart, or Other for another compatible 48V cart, and confirm tray fitment, terminal clearance and mounting before installation. For Club Car Precedent, EZGO RXV, EZGO TXT and Yamaha carts, the full-size 48V 105Ah Golf Cart Battery Complete Kit has bracket configurations for those carts.
Replace six 8V lead-acid batteries with one Mini LiFePO4 golf cart battery.
This kit replaces a lead-acid bank, such as six 8V batteries, with a single 51.2V (48V class) 105Ah LiFePO4 battery in a 15.8 × 11.1 × 10.9 in Mini case. The compact case frees battery-bay space for storage, audio equipment or cleaner wiring, and the battery needs no watering or acid service; routine inspections of the terminals, cables and mounting still keep it operating safely.
With 200A continuous discharge, 300A for up to 15 seconds and 700A for up to 2 seconds, it suits many lifted carts, rear-seat carts and upgraded controllers such as Navitas or Alltrax, when their current demand stays within these ratings. Before installing, confirm your cart is a compatible 48V platform and check tray fitment, terminal clearance, cable size, overcurrent protection and the controller's current settings.
The core conversion components in one kit.
Instead of sourcing a battery, charger, extension cord, gauge, remote switch, converter, charge port and brackets separately, the kit brings the main conversion components together. The listed kit contents do not include a main fuse or DC-rated breaker: install one selected for the wire, load and system voltage, as close as practical to the battery positive terminal, and make sure the cables and lugs are sized for your installation.
| 12V converter wiring (from the converter label) | |
|---|---|
| Yellow · 40–90V+ | Input positive, from the 48V system |
| Black · 40–90V− | Input negative, from the 48V system |
| Orange · KEY ON+ | Key-switch (enable) input |
| Red · 13.5V+ | Output positive, to 12V accessories |
| Black · 13.5V− | Output negative, to 12V accessories |
Two converter wires are black: confirm the input negative and the output negative before connecting, since reversing them can damage the converter or the accessories. Turn the battery off and disconnect the charger before wiring the converter. The label does not specify the key-on source, fusing or connector pinout; follow the kit instructions or have a qualified installer confirm them for your cart.
Club Car DS first, plus EZGO, Club Car Precedent and Onward, Yamaha, ICON and other compatible 48V carts.
High-current LiFePO4 power in a compact case, with the conversion components included.
Ratings at 25°C unless noted, from the BB51105A_MINI-kit-1 spec sheet, technical data sheet and user manual (Rev V01, September 2026).
| General | |
|---|---|
| Brand | Epoch Batteries |
| Product | 48V 105Ah MINI Golf Cart Battery Complete Kit - Lithium (LiFePO4) |
| Model / SKU | BB51105A_MINI-kit-1 (Club Car DS); BB51105A_MINI-kit-2 (Other) |
| Series | Big Box Series |
| Battery type | LiFePO4 golf cart battery, 48V class, compact Mini case |
| Chemistry | LiFePO4 (lithium iron phosphate) |
| Cell configuration | 16S1P (16 prismatic cells in series) |
| Cart configurations | Club Car DS; Other (compatible 48V carts) |
| Bluetooth | Yes — Epoch Li-Ion app (iOS and Android) |
| Firmware updates | Over the air (OTA) through the app |
| CAN communication | Yes — CAN connector on the harness, for manufacturer or dealer service |
| 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. |
| Electrical | |
| Nominal voltage | 51.2V (48V class) |
| Nominal capacity | 105Ah |
| Stored energy (nominal) | 5.38kWh (5,376Wh) |
| Operating voltage range | 40–58.4V |
| Maximum charge voltage | 58.4V |
| Power-down state | Any cell below 2.2V, or pack voltage about 38V |
| Self-discharge | 3% per month |
| Current ratings | |
| Max continuous discharge | 200A (1.9C) |
| Peak discharge | 300A for up to 15 s; 700A for up to 2 s |
| Max continuous charge | 100A (0.95C) |
| Peak charge (regenerative braking) | 300A for up to 15 s |
| Battery banks | |
| Series connection | Not supported (48V native battery system) |
| Parallel connection | Max 2 batteries (210Ah, 10.75kWh) |
| Charging | |
| Included charger | 48V 15A waterproof lithium charger; AC input 85–265V |
| Charge time | About 7 h from empty with the included charger |
| Charger restart | When the lowest cell falls below 3.34V (about 95% SOC) |
| Full charge | SOC resets to 100%; the gauge reads 100% |
| Bulk / absorption (other LiFePO4 chargers) | 56.8–57.6V |
| Absorption end | Charge current ≤ C/20 (5.25A) or 15 min, whichever comes first |
| Float | Disabled (preferred) or 53.3–54.4V |
| Re-bulk | 52.8V |
| Temperature compensation / equalization | 0 mV/°C (off) / disabled |
| BMS high-voltage cutoff / SOC recalibration | 58.4V |
| Lead-acid chargers | Not compatible: they will not properly charge or balance the battery |
| Temperature | |
| Charge | 0°C to 55°C (32°F to 131°F); no internal heater |
| Discharge | −10°C to 55°C (14°F to 131°F) |
| Storage (up to 1 month) | −20°C to 55°C (−4°F to 131°F) |
| Storage (recommended) | 0°C to 35°C (32°F to 95°F); up to 12 months |
| Mechanical | |
| Dimensions (L × W × H) | 15.8 × 11.1 × 10.9 in (401 × 282 × 277 mm) |
| Weight | 99 lb (45 kg) |
| Case material | Stainless steel |
| Terminal type | M8 female |
| Controls and ports | On/off switch, communication port, vent, positive and negative terminals |
| Enclosure rating | IP67 per IEC 60529: dust-tight; protected against temporary immersion (1 m, 30 min) |
| Kit contents | |
| Battery | 48V 105Ah MINI LiFePO4 golf cart battery |
| Charger | 48V 15A waterproof lithium charger with a 10 ft heavy-duty extension cord |
| Gauge | Digital Bluetooth battery gauge: state of charge (0–100%), voltage, current and temperature |
| On/off switch | 6 ft remote on/off power switch with wiring harness (13 ft extended harness sold separately) |
| 12V converter | 48V to 12V step-down converter, 25A (input 40–90V, output 13.5V) |
| Charge port | Cart-specific charge port plug (replaces the factory charging receptacle) |
| Mounting | Cart-specific mounting brackets (Club Car DS or Other) |
| App | Free Epoch Li-Ion app access (iOS and Android) |
| BMS protection | |
| Over-voltage | Cell and pack over-voltage protection |
| Under-voltage | Cell and pack under-voltage protection |
| Over-current | Charge and discharge over-current protection |
| Short circuit | Discharge short-circuit protection |
| Temperature | Charge and discharge over/under-temperature, ambient and MOSFET over-temperature protection |
| Cell balancing | Integrated; cell-unbalance alarm |
| Low-charge warning | Buzzer and gauge warning below 20% SOC |
| Compliance | |
| Cell-level certifications | UL 1642; IEC 62619:2022 (the cells used in this battery, not the complete battery assembly) |
| Product | CE; RoHS |
| Transport | UN 38.3 |
| Enclosure | IP67 per IEC 60529 |
One compact battery instead of a bank, and no watering or acid service.
LiFePO4 (lithium iron phosphate) is a lithium-ion chemistry valued for thermal stability and long cycle life. Its voltage stays nearly flat across most of the discharge, and the battery needs no watering or acid service, only routine inspections.
How the included charger, gauge and on/off switch work day to day.
The BMS reports alarms and protection events on the gauge, with the buzzer and in the app.
An alarm is an early warning; a protection event means the BMS has limited or stopped charging or discharging. Alarms beep 1 s on and 1 s off; protection events beep 0.2 s on and 0.2 s off. If the buzzer sounds while driving, slow down or stop and check the battery.
| Gauge display | Cause | Notes |
|---|---|---|
| WARNING2 / 4 | Cell / pack low voltage | Not shown while charging |
| WARNING5 | Large cell-voltage difference | — |
| WARNING6 | Over-discharge | — |
| WARNING7 | Charging over-current | Not shown while charging |
| WARNING8 / 9 | Over-temperature / low temperature | Not shown while charging |
| WARNING10 | Large temperature difference | — |
| WARNING11 | Low SOC: 11–20% alarm; 0–10% protection | Not shown while charging |
| WARNING14 | External communication failure | — |
| No display | Cell or pack over-voltage | No buzzer |
Low-voltage or low-charge warning: stop and charge the battery. Temperature warning: stop and let the battery return to its operating range. Over-current warning: reduce the load and check the controller's current settings. Detection faults, MOSFET faults or a persistent cell-unbalance alarm: stop using the battery and contact Epoch support with the app screen and the gauge display.
Verify your cart and configuration before installation.
Only authorized mechanics or technicians should install the battery. Confirm your cart is a compatible 48V platform and verify tray fitment (the 15.8 × 11.1 × 10.9 in case plus cable clearance), bracket configuration (Club Car DS or Other), the controller's continuous and peak current settings, cable routing, OBC requirements, accessory wiring and charger installation.
No watering or acid service; routine inspections keep it operating safely.
| Inspection intervals | |
|---|---|
| Before each use | Inspect the case, terminals, cables, fuses, disconnects and mounting hardware |
| Monthly during active use | Check terminal tightness, cable condition, app status and resting voltage |
| At least every 3 months in storage | Check the state of charge and recharge as needed |
| Annually | Inspect torque, wiring layout, protection devices, battery tray, ventilation and charger settings |
| After any fault or impact | Stop use, inspect for damage, record the app data and contact support as needed |
Keep the terminals clean and dry; do not use solvents, abrasive cleaners or pressure washing on the battery. Never place a multimeter's current (amps) input across the battery terminals: measure current with a DC clamp meter or a correctly rated shunt.
Common questions about Club Car DS fitment, included components, charging, 12V accessories, range and care.
The Mini kit comes in two bracket configurations: Club Car DS, and Other for other compatible 48V carts. Compatible carts include Club Car DS 48V carts (an OBC bypass may be required), EZGO TXT and RXV, Club Car Precedent and Onward, Yamaha Drive and Drive2, and ICON, Evolution, Bintelli and Advanced EV carts, where tray, mounting, wiring and controller requirements match. The battery case is 15.8 × 11.1 × 10.9 in (401 × 282 × 277 mm); always confirm tray fitment and cable clearance, cable routing and your controller's current settings before installation.
Choose Club Car DS. The kit is configured for the Club Car DS, with brackets for its battery compartment. Club Car DS carts with an On-Board Computer (OBC) may also need an OBC bypass so the included lithium charger can charge the battery directly.
The 48V 105Ah MINI LiFePO4 battery, a 48V 15A waterproof lithium charger with a 10 ft heavy-duty extension cord, a digital Bluetooth battery gauge, a 6 ft remote on/off power switch with wiring harness, a 48V to 12V step-down converter (25A), a cart-specific charge port plug that replaces the factory charging receptacle, cart-specific mounting brackets (Club Car DS or Other) and free access to the Epoch Li-Ion app. The listed kit contents do not include a main fuse or DC-rated breaker; install one close to the battery positive terminal.
No. Lead-acid chargers use different charging profiles and will not properly charge or balance a LiFePO4 battery. The kit includes a 48V 15A waterproof lithium charger; Club Car carts with an On-Board Computer (OBC) may need an OBC bypass. Never use lead-acid equalization, desulfation or repair modes on this battery.
About 7 hours from empty with the included 48V 15A charger. Charge after each day's use, or at least once a week with occasional use.
Through the included cart-specific charge port plug, which replaces the factory charging receptacle. Plug the 10 ft heavy-duty extension cord that comes with the charger into the port and a standard 120V AC outlet; the port passes AC power to the onboard 48V 15A lithium charger. The charger, not the port plug, sets the LiFePO4 charge profile.
The dash-mounted digital gauge shows the state of charge from 0 to 100%, battery voltage, current and temperature, and shows warnings when the BMS raises an alarm. The kit also includes free access to the Epoch Li-Ion app for iOS and Android, which connects over Bluetooth to show battery status on your phone and install firmware updates over the air.
The included remote on/off power switch comes on a 6 ft harness, which suits standard 2-passenger and many 4-passenger carts. For stretched, 6-passenger or custom carts, where the battery sits farther from the dash, add the 13 ft Extended Harness for LiMAX Big Box (sold separately). Route the harness along protected frame paths and do not splice or daisy-chain it.
Through the included 48V to 12V step-down converter, so 12V headlights, turn signals, light bars, radios and USB outlets receive a regulated supply (its label marks the output 13.5V). The converter is rated 25A, so keep the total 12V accessory load within 25A. Two of its wires are black, input and output negative: confirm which is which before connecting.
Some Club Car models, especially older Precedent or DS carts with an On-Board Computer (OBC), may require an OBC bypass so the included lithium charger can charge the battery directly. Confirm your cart wiring and OBC configuration before installation.
Epoch estimates roughly 35 to 45+ miles per charge for many standard 48V carts. Range depends on terrain, passenger weight, tire size, lift kits, controller tuning, speed and accessory load; modified carts and steep terrain reduce range.
Yes, when the controller's current demand fits the battery ratings: 200A continuous, 300A for up to 15 seconds and 700A for up to 2 seconds, which suits many lifted carts, rear-seat carts and upgraded controllers such as Navitas or Alltrax. Check the controller's continuous and peak current settings and keep them within these ratings. Regenerative braking can return up to 300A for 15 seconds; the continuous charge limit is 100A.
Not below freezing. The battery has no internal heater, and the BMS blocks charging outside 0°C to 55°C (32°F to 131°F). Let a cold battery warm above freezing before charging. It discharges from −10°C to 55°C (14°F to 131°F).
It is rated IP67 per IEC 60529: dust-tight and protected against temporary immersion up to 1 m for 30 minutes. Do not submerge, pressure-wash or leave it in standing water, and inspect the battery and connectors after any immersion.
Up to 2 Mini batteries of this model can be connected in parallel (210Ah, 10.75kWh at 51.2V). Series connection is not supported. Use matched batteries of similar age, condition and firmware, charge each fully first, and never mix them with lead-acid batteries or other models.
No watering: the battery needs no watering or acid service, though routine inspections keep it operating safely (check the terminals, cables, fuses and mounting before use, and terminal tightness monthly). For off-season storage, keep the state of charge between 60% and 90%, turn the battery off and store it dry at 10–35°C (50–95°F) where practical, checking the state of charge at least every 3 months. The warranty excludes batteries left uncharged for more than three months.
The BMS reports alarms and protection events on the gauge, with the buzzer and in the app. If the buzzer sounds while driving, slow down or stop and check the battery; otherwise BMS protection may shut it down. For low-voltage or low-charge warnings, stop and charge the battery. For temperature warnings, stop and let the battery return to its operating range. For over-current warnings, reduce the load and check the controller's current settings. For detection faults, MOSFET faults or a persistent cell-unbalance alarm, stop using the battery and contact Epoch support.
Above 20% state of charge, the battery shuts down after 7 days without discharge; at or below 20%, after 24 hours. Press the on/off switch twice to restart: once to reset the switch and once to turn the battery on.
The battery in the BB51105A_MINI-kit-1 carries the 11-year limited warranty (5 years of free repair or replacement, then 40% off MSRP on a replacement battery through Year 11); the included charger is covered for 2 years and the other kit components for 1 year. Coverage is for qualifying defects in materials and workmanship under normal use, subject to Epoch Batteries' warranty terms, model-specific remedy schedule and claim procedures. Proof of ownership is required for any claim, and coverage is non-transferable: it applies only to the original purchaser. Coverage starts on your purchase date. Register within 90 days at epochbatteries.com/pages/product-registration or keep your proof of purchase; if you have neither, coverage starts on the manufacturing date. The full terms at epochbatteries.com/pages/11-year-warranty govern coverage, remedies and exclusions.
As Featured In
Golf Car Options Magazine
Every mark below is a standard this battery has been tested against or a listing it carries. Here is what each one covers, in plain English.
Ingress protection
Dust-tight, and protected against temporary immersion in up to 1 m of water for 30 minutes. Under IEC 60529 the first digit rates solids and the second rates water.
IEC 60529, Degrees of protection provided by enclosures
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