About the Epoch 48V 100Ah V2 Elite Battery

A 48V system moves the same power at a quarter of the current a 12V system needs. That means smaller cables, lower losses and less heat at every connection. That’s why 48V suits the bigger inverter systems in RVs, boats and off-grid cabins. The Epoch 48V 100Ah V2 Elite puts that platform in one 5.12kWh LiFePO4 battery. The BMS, self-heating and Victron CAN link are built in, and Bluetooth comes through the included gauge.

It handles inverter loads with room to spare. In Epoch’s example, a 2,000W load through a 90% efficient inverter pulls about 43A from the battery. Even a 3kVA inverter-charger at full output stays well below the 1C (100A) discharge rate behind Epoch’s cycle-life rating. A Victron MultiPlus-II 48V 3kVA inverter-charger pairs naturally with one battery, and the bank grows from there.

Victron CAN and Bluetooth Monitoring

The included harness connects to VE.Can 1 or 2 on a Cerbo GX MK2, with the port set to 500 kbit/s. On other GX devices, it goes into the BMS-CAN port. With DVCC on and Epoch set as the controlling BMS and battery monitor, every Victron charger in the system follows the battery’s limits. That matters at 48V. An inverter-charger and solar chargers together can top the battery’s 100A continuous charge rating, and the GX keeps the combined total in check.

The Bluetooth gauge adds a second view in the Epoch Li-Ion app. You’ll see state of charge, cell voltages, temperatures and alerts for each battery, and you get firmware updates over the air.

Cold-Weather Charging in an IP67 Case

The V2 Elite heats its own cells with incoming charge power, not stored energy. The BMS pauses charging at 32°F (0°C) cell temperature and starts again at 41°F (5°C). That lets it charge from -22°F (-30°C) ambient. It discharges down to -4°F (-20°C) with no heat needed. The UL94 V-0 case is dust-tight and IP67 rated for temporary immersion to 3.3 ft (1 m) for 30 minutes. Lockers, exterior bays and cabin battery boxes are all fair game. IP67 covers temporary immersion, not pressure washing or continuous submersion.

Building a 48V Battery Bank in Parallel

This is a native 48V battery, so banks grow in parallel only, up to 16 batteries for 1,600Ah and 81.92kWh. Epoch recommends busbar connections over daisy-chaining battery to battery. That way every battery in a growing bank charges evenly.

Each battery is rated for 150A of discharge for up to 20 minutes, about 7,680W DC before inverter losses. It also handles 300A for 30 seconds, which covers start-up surges from compressors, well pumps and power tools. Epoch notes the 150A figure isn’t for cycling. Epoch’s advice is to add batteries in parallel whenever the inverter’s DC input can top 150A. Our team is happy to help with sizing a bank around your loads.

Fusing, Cables and Mounting for a 48V LiFePO4 Battery

Epoch’s manual asks that installation be done by someone who understands DC electrical systems: lithium charge settings, overcurrent protection, conductor sizing and terminal torque. Here’s how each applies to this battery.

The internal 270A fuse protects the battery, not your wiring. Epoch calls for a DC-rated fuse or breaker in the positive cable, close to the battery. It needs a rating of at least 58.4V and enough interrupt capacity for a lithium bank. Epoch sizes it at 125 to 150% of the system’s max operating current, without going over the cable’s ampacity. For one battery working at its full 150A rating, a 225A Class-T fuse lands right at Epoch’s 150% figure. That holds as long as the cable is rated for at least 225A.

Size your cables for the 150A rating and an acceptable voltage drop, not the 30-second peak. Our custom battery cables are made to order from 6 AWG to 4/0 AWG at the lengths you measure. Torque the M8 terminals to 71 to 106 in-lb (8 to 12 N·m).

Mount the battery upright and secure it against vibration, braking and wave impact. The Epoch V2 Elite mounting hardware bolts to the six M8 nuts on the case. It ships at about 30% charge, so give it a full charge before first use.

Epoch 48V Elite V2 Battery Bundle

What's Included

Epoch 48V 100Ah V2 Elite LiFePO4 Lithium Battery, C48100A, 5.12kWh, Heated, Bluetooth, Victron CAN, IP67

2/0 AWG Pure Copper Battery Cables - Red and Black - 5/16" Ring Terminal Lugs

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