Original price was: £459.90.£399.90Current price is: £399.90.
Triangle Ebike Battery 48V 35Ah – High-capacity lithium-ion 48V battery designed in a space-saving triangle shape, perfect for frame mounting.
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The Triangle Ebike Battery 48V 35Ah is the highest-capacity 48V triangle battery available — a frame-integrated lithium-ion battery pack built on Grade A 21700 LG5000mAh cells, delivering 1680Wh of stored energy for 48V and 52V motor systems. With a 45A continuous discharge current, an 800–1000+ cycle life, comprehensive BMS protection, and the clean, centred weight distribution that only a frame triangle mounting position delivers, the Triangle Ebike Battery 48V 35Ah is the definitive long-range, high-power energy source for serious electric bike builds that demand everything from their battery — maximum capacity, premium cell quality, high sustained discharge, and a build aesthetic that no external battery mounting can match. This is the electric bike triangle battery for builders who set their bar at the top of the range.
At 35Ah and 48V nominal, the Triangle Ebike Battery 48V 35Ah stores 1680Wh of usable energy — the highest energy capacity available in any 48V triangle battery format. For a 48V motor system consuming 15–20Wh per kilometre under mixed conditions, 1680Wh delivers an estimated range of 84–112km per charge from a mid drive system in the 250W–350W range. For high-output hub motor and mid drive systems in the 750W–2000W range, real-world range remains substantial enough to cover full-day riding, extended delivery routes, and multi-stage touring on a single charge. This is the triangle battery for riders who want to measure their range in genuine all-day capability rather than optimistic laboratory figures — the pack that keeps going when smaller batteries have been empty for an hour.
The step from the Triangle Ebike Battery 48V 30Ah at 1440Wh to the 35Ah at 1680Wh represents a 16.7% increase in stored energy at the same LG5000mAh cell specification, same 45A discharge rating, and same triangle format — a meaningful additional reserve that makes a real difference on the longest routes and in the most demanding riding conditions.
The Triangle Ebike Battery 48V 35Ah is built on Grade A 21700 LG5000mAh cells — the same premium cell specification used in the 30Ah format, now delivering 1680Wh at 35Ah. LG SDI 21700 cells represent the premium tier of cylindrical lithium-ion cell manufacturing — 5000mAh per cell at the 21700 format delivers the highest energy density per cell available in commercial lithium-ion production. Grade A selection means every cell in this electric bike triangle battery is manufactured to the tightest internal resistance tolerances — consistent performance across every cell, even ageing across the full pack, and reliable BMS management through every charge cycle.
The cycle life specification reflects this cell quality: 800–1000+ cycles before the pack degrades to 80% of its original 1680Wh capacity. At one full charge per day, that represents close to three years of daily use at the upper end of the range — a battery pack that earns its cost over years of serious use rather than requiring replacement after a single season.
The 45A continuous discharge current of the Triangle Ebike Battery 48V 35Ah is the discharge specification that matches its 2000W motor compatibility. At 48V nominal, 45A continuous discharge delivers up to 2160W of sustained power draw — providing 160W of headroom above the 2000W motor ceiling under continuous operation. This headroom is critical for sustained high-output riding: the BMS does not trip into current limiting under normal hard riding conditions including sustained steep climbs at full throttle, hard acceleration from standstill under load, and extended high-speed flat running. The 45A specification gives high-power motor systems the clean, uninterrupted power delivery they need to perform consistently across demanding terrain.
For the highest-output hub motor builds that draw fully on this triangle battery‘s 45A capability, the E-Bike Conversion Kit 2000W BLACK is the directly compatible motor system — Smart Sine Wave controller, 27.5-inch MTX wheels, and a 2000W brushless hub motor that operates cleanly within the discharge envelope of this battery. For the full range of compatible conversion kits, visit the Conversion Kit category page.
The XT60 connector on the Triangle Ebike Battery 48V 35Ah is rated for the 45A continuous current demands of this electric bike triangle battery — delivering reliable, low-resistance current flow across hundreds of connection cycles without contact degradation. XT60 is the most widely supported high-current connector format in the DIY e-bike conversion market, compatible with the majority of motor controllers available without adapter modification. The connector’s positive-lock design ensures secure contact during riding — no vibration-induced disconnection, no intermittent power delivery, no connector failures under sustained high-current operation.
The Triangle Ebike Battery 48V 35Ah mounts inside the main bicycle frame triangle using integrated straps and brackets — no drilling, no welding, no permanent frame modification. This mounting position delivers three practical advantages over downtube and external battery formats that no alternative placement can replicate. Weight distribution: 1680Wh of battery mass sits at the geometric centre of the bicycle frame, between both wheels and as low as the triangle allows — preserving natural handling balance and keeping the centre of gravity low regardless of terrain or speed. Frame integration: the battery fills the empty void inside the triangle that most bicycle frames already have, making the conversion look purpose-built rather than aftermarket. Stability: a frame-mounted pack experiences less vibration isolation stress than external rack or downtube packs, contributing to long-term connector and cell reliability under hard riding conditions.
The durable, heat-resistant outer casing protects the Grade A LG cells and BMS electronics from vibration, mechanical impact, and weather exposure during normal outdoor use. Verify your frame triangle internal dimensions against this battery’s physical profile before ordering — the 35Ah format is the largest in the 48V triangle range and requires the most frame triangle volume to accommodate it. Larger mountain bike and hybrid frames typically provide sufficient clearance; smaller road and city bike frames may not.
The integrated BMS in the Triangle Ebike Battery 48V 35Ah provides four layers of active protection across every charge and discharge cycle. Overcharge protection terminates charging at 54.6V. Over-discharge protection enforces the low-voltage cut-off to preserve LG cell chemistry at the bottom of the discharge curve. Overcurrent protection limits discharge current under fault conditions, protecting both the cell pack and the motor controller. Short-circuit protection provides immediate system shutdown on wiring or connector failure. Active cell balancing during charging ensures every LG cell in the series string reaches the same state of charge — the mechanism that maintains capacity consistency across 800–1000+ cycles and prevents early cell divergence. The BMS operates continuously and transparently, requiring no user maintenance throughout the pack’s service life.
The triangle battery charges to a full cut-off voltage of 54.6V in approximately 7 hours from empty at standard charge rates. The BMS terminates charging automatically at 54.6V regardless of charger output — no overcharge risk, no need to monitor the charging cycle. Standard 7-hour overnight charging delivers a fully charged 1680Wh pack every morning. For the complete battery range across triangle and downtube formats at all voltages and capacities, visit the Batteries category page.
| Spec | Detail |
|---|---|
| Voltage | 48V |
| Capacity | 35Ah |
| Battery Type | Lithium-ion (Li-ion) |
| Energy | ~1680Wh |
| Cell Type | Grade A 21700 LG5000mAh |
| Discharge Current | 45A |
| Charging Voltage | 54.6V |
| Cycle Life | 800–1000+ cycles |
| BMS Protection | Overcharge, over-discharge, overcurrent, short-circuit |
| Charging Time | ~7 hours |
| Connector | XT60 |
| Case Material | Durable, heat-resistant |
| Compatible Motor Power | Up to 2000W (48V/52V) |
| Format | Triangle (frame-integrated) |
The Triangle Ebike Battery 48V 35Ah is the maximum-capacity, premium-cell 48V triangle battery — 1680Wh of LG5000mAh energy, 45A continuous discharge, 800–1000+ cycle longevity, four-layer BMS protection, and frame-integrated mounting that keeps weight centred and build aesthetics clean. The electric bike triangle battery and battery pack for builders who want everything from their 48V conversion system — range, power, cell quality, and a build that looks as serious as it performs.
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