£249.90
The 48V 13Ah Downtube eBike Battery is a reliable and compact power solution designed for electric bike conversion kits and custom eBike builds. Built with high-quality lithium-ion cells, this battery delivers consistent performance, efficient power output, and long riding range for daily commuting or leisure rides. Its downtube-mounted design provides a clean integrated look while improving weight distribution and bike handling. Compatible with a wide range of 48V eBike motors and controllers, this battery is ideal for riders looking for dependable performance and easy installation.
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Power your electric bike build with confidence. The 48V 13Ah ebike battery is a high-performance lithium-ion downtube battery pack built on Grade A 18650 cells, delivering 624Wh of usable energy for 48V motor systems rated from 250W up to 1500W. Compact, lightweight at 5.2kg, and built for long-term ownership, this ebike battery 48V 13Ah is the entry-point 48V pack that covers hub motor conversions, mid drive builds, and replacement battery upgrades across a wide range of electric bikes. Whether you’re commuting daily, tackling longer weekend rides, or running a high-power build, the 48V 13Ah ebike battery delivers the sustained output, long cycle life, and built-in protection that a properly specified e-bike conversion demands.
At 624Wh, this 48V 624Wh electric bike battery delivers a real-world range that suits the majority of daily riding scenarios for 48V motor systems. A 250W–350W mid drive system consuming 15–20Wh per kilometre under mixed conditions gets an estimated 31–41km per charge from this pack. A higher-output hub motor system running at sustained 500W–750W output draws more current per kilometre but still delivers a meaningful range that covers typical commuting and recreational riding distances. For riders who need more capacity, the range extends upward through the 48V battery lineup — but for the majority of daily commuters and casual builders working with mid-power 48V systems, the 13Ah format hits the right balance of capacity, weight, and physical size.
The compact 368 × 112mm footprint and 5.2kg weight make this lithium ebike battery 48V well-suited to downtube mounting on most conversion frames — fitting within the standard bracket dimensions used across the 48V downtube battery range. For builds where more range is the priority, the 48V 20Ah battery is the direct capacity upgrade on the same platform.
The foundation of the 48V 13Ah ebike battery is its Grade A 18650 lithium-ion cells — the same cell format used in high-end consumer electronics and professional battery packs worldwide. Grade A cells are tested to the highest consistency standards for capacity, internal resistance, and cycle performance, ensuring reliable output across every charge cycle. Consistent internal resistance means balanced charge distribution across every cell in the series string — the BMS can manage the pack optimally rather than compensating for weak cells that degrade faster than the rest.
The cycle life specification reflects this cell quality directly — ≥80% capacity retention after 800 full charge cycles. At one full charge per day, that represents over two years of daily charging before the pack drops to 80% of its original 624Wh capacity. Under typical riding patterns with partial charges, practical service life extends further still. This 48V battery electric bike UK pack is built for long-term ownership, not short-term use.
The ebike battery 48V 13Ah operates between a full charge voltage of 54.6V and a discharge cut-off of 37.4V. At full charge, the pack delivers its maximum voltage — producing peak motor performance and the sharpest throttle response at the start of each ride. As the pack discharges through its operating range, voltage declines gradually until the BMS enforces the 37.4V cut-off to protect cell chemistry from deep discharge damage. The 17.2V operating window between full charge and cut-off delivers the 624Wh of usable energy across a voltage range that the motor controller handles naturally without any configuration adjustment.
The discharge specification of this lithium ebike battery 48V is built specifically for motor applications. At 40A continuous discharge, the pack sustains up to 1920W of continuous power draw at 48V nominal — well above the 1500W maximum motor rating this battery supports, giving substantial headroom against the BMS protection threshold under normal riding conditions. The 100A peak discharge current handles the high-current demand spikes during hard acceleration from a standstill without voltage sag or protective shutdown. This is the discharge profile of a properly specified 48V 624Wh electric bike battery designed for e-bike motor applications, not a repurposed general-purpose lithium pack.
The integrated BMS in this 48V 13Ah ebike battery provides comprehensive four-layer protection across every charge and discharge cycle. Overcharge protection terminates charging at 54.6V to prevent cell damage from excess voltage. Over-discharge protection enforces the 37.4V cut-off to preserve cell chemistry at the bottom of the discharge curve. Overcurrent protection limits discharge current under abnormal load conditions, safeguarding both the battery cells and the motor controller from fault events. Short-circuit protection provides immediate shutdown in the event of a wiring fault or connector failure, protecting the entire system from damage. All four protection mechanisms operate transparently and continuously — no user interaction required, no maintenance needed.
The 48V battery electric bike UK pack charges at a standard rate of 3A, delivering a full charge from empty in approximately 3–4 hours — one of the faster charge times in the 48V downtube battery range, due to the 13Ah capacity being relatively modest compared to higher-capacity packs. For the fastest possible turnaround, the pack supports a maximum continuous charge current of 5A, reducing full charge time to under 3 hours. The BMS terminates charging automatically at the 54.6V cut-off regardless of charger current, eliminating any risk of overcharge regardless of the charger used within the supported current range.
The 48V 13Ah ebike battery is compatible with the full range of 48V hub motor and mid drive systems from 250W through to 1500W. This includes BAFANG BBS01, BBS02, and BBSHD mid drive systems, all 48V hub motor conversion kits in the standard output range, and high-performance builds running up to 1500W. The 40A continuous discharge rating comfortably sustains full output from any motor in this range, and the 100A peak handles hard-start current demand spikes without issue. For hub motor conversion builds in the 1500W range, the E-Bike Conversion Kit 1500W BLACK is a directly compatible motor system that pairs cleanly with this battery. For the full range of compatible conversion kits, visit the Conversion Kit category page. For the complete 48V and 52V battery range at all capacities, visit the Batteries category page.
| Spec | Detail |
|---|---|
| Nominal Voltage | 48V |
| Capacity | 13Ah |
| Energy | 624Wh |
| Cell Type | Grade A 18650 lithium-ion |
| Cycle Life | ≥80% after 800 cycles |
| Compatible Motor Power | 250W–1500W (48V) |
| Continuous Discharge | 40A |
| Peak Discharge | 100A |
| Standard Charge Current | 3A |
| Max Charge Current | 5A |
| Charge Cut-off Voltage | 54.6V |
| Discharge Cut-off Voltage | 37.4V |
| Charging Time | 3–4 hours |
| Weight | 5.2kg |
| Dimensions | 368 × 112mm |
| Format | Downtube |
| BMS Protection | Overcharge, over-discharge, overcurrent, short-circuit |
The 48V 13Ah ebike battery is the complete, properly specified lithium ebike battery 48V for builders who want reliable 48V energy storage in a compact, lightweight downtube format. Grade A 18650 cells, 624Wh of usable energy, 40A continuous discharge, comprehensive BMS protection, and 800-cycle longevity — the ebike battery 48V 13Ah delivers the sustained, consistent power output that every serious 48V e-bike conversion deserves. Available now with fast UK delivery from All4eBikes.
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