Custom 48V 135Ah LiFePO4 Battery Pack

A 51.2V 135Ah LiFePO4 traction pack for golf carts and low-speed electric vehicles that run all day and charge overnight. It carries 6.91 kWh of usable energy and delivers 25A continuous, a 0.19C rating. This is a steady-load design rather than a high-rate traction pack.

Charging at 25A brings it to full in roughly 6 hours. The operating window is -20~60°C on discharge and 0~45°C on charge. The pack measures 760 x 320 x 260 mm and weighs 72 kg.

Where it sits in the range

Within our 48V range this sits between the 105Ah and 150Ah builds. If your runtime target is tighter than expected once we model the duty cycle, the 150Ah configuration is the usual next step; if weight or envelope is the binding constraint, the 105Ah build is lighter.

What we customise

Nothing here is fixed. Capacity, box dimensions, terminals and cable exit are drawn to the cart. CAN and RS485 handle controller integration and Bluetooth covers day-to-day checks. Where a fleet genuinely needs remote visibility across dozens of vehicles, WiFi or 4G telemetry is available as a custom option.

Common questions

How do you handle fleet rollouts?
Pilot pack first, then production once the duty cycle is confirmed in the field. It is cheaper than discovering a sizing error across forty carts.

Can you supply matching chargers?
Yes. We build chargers alongside packs so the charge profile matches the BMS rather than fighting it.

Cells, compliance and lead time

Grade A prismatic LFP cells, generally specified with UL recognition at cell level. Every pack ships with a UN38.3 test summary and MSDS prepared for air, sea and road transport. Assembly and testing take around 7 working days. Cell supply is what sets the overall schedule: when the cells your design needs are in stock, samples ship in 12–15 working days; when they have to be sourced, allow 20–25. Tell us your target date early and we will confirm cell availability before you commit to it. Production runs 30–35 working days. There is no minimum order quantity — this is a custom design business and we quote single units, with pricing improving noticeably from 100 packs upward. LiFePO4 warranty typically runs 3–5 years, set against the discharge duty of the application; high-rate cycling shortens it.