Ebike Battery 36V 35Ah — Long Range Downtube Battery

1260Wh — Maximum Range in the 36V Downtube Format

This battery stores approximately 1260Wh of energy — more than double the capacity of the 15Ah format and 67% more than the 20Ah pack. For a 36V motor system consuming an average of 15–20Wh per kilometre under mixed conditions, that translates to an estimated range of 63–84km per charge. For riders running lower assist levels on predominantly flat terrain, range extends further still.

20Ah vs 35Ah — A Category Shift

The step from the 20Ah to the 35Ah is not a marginal upgrade — it is a category shift in what a 36V conversion system can do. The Battery 36V 20Ah delivers 756Wh for medium-range applications. This battery delivers 1260Wh for riders who want the longest possible range from a single downtube pack on a 36V platform.

LG5000mAh 21700 Grade A Cells — Premium Cell Chemistry

The cell specification inside this battery is what separates it from generic high-capacity packs. Built on high-quality Grade A LG5000mAh 21700 cells — the 21700 format is physically larger than the standard 18650, delivering higher energy density per cell and allowing a 35Ah pack capacity within a manageable physical footprint. LG is one of the most respected lithium-ion cell manufacturers globally, and Grade A selection means every cell in this pack is manufactured to the tightest internal resistance tolerances — consistent performance, even ageing, and reliable BMS management across every cycle.

The cycle life specification reflects this quality directly — 800–1000+ cycles before capacity degrades to 80% of original rated capacity. At one full charge per day, that represents more than two years of daily charging at the conservative end, and potentially three or more years at the upper end of that range.

30A Continuous Discharge — Matched for 36V Motor Systems

This battery delivers a continuous discharge current of 30A — sufficient to sustain full output from any 36V motor system rated up to 500W without BMS protection tripping or cell thermal stress under normal riding conditions. At 36V × 30A, the pack can sustain up to 1080W of continuous power draw — comfortably above the rated output of the 250W–500W motor range this battery is designed to support. The result is clean, consistent power delivery across the motor’s full operating range with no voltage sag under normal load and no protective shutdown during sustained hill climbing or hard acceleration.

Charging Voltage and Time

This battery charges to a full charge cut-off voltage of 42V — the standard charge termination voltage for 36V lithium-ion packs — with a charging time of approximately 7 hours from empty. The BMS terminates charging automatically at the 42V cut-off regardless of charger output, protecting every cell from overcharge stress. The XT60 connector is a robust, high-current rated format that handles the charge and discharge current demands of this pack without contact resistance issues over repeated cycling.

BMS — Comprehensive Cell Protection

The integrated BMS provides four layers of active protection across every charge and discharge cycle:

The active cell balancing function during charging ensures every cell in the series string reaches the same state of charge at the end of each cycle — the key mechanism that maintains capacity consistency over 800–1000+ cycles and prevents early-ageing divergence between individual cells.

Durable Heat-Resistant Casing

The outer casing is manufactured from durable, heat-resistant material — a specification that matters for a battery used in outdoor conditions across variable temperatures and weather. Heat-resistant casing slows thermal transfer to the cells under direct sun exposure in warm conditions, contributes to dimensional stability that maintains the mounting bracket fit over the long term, and provides mechanical protection against the incidental impacts and vibration that are part of normal riding use.

Compatible Motor Systems and Builds

This battery is compatible with most 36V eBikes and DIY conversion setups rated up to 500W. Primary applications include the BAFANG 250W mid drive BBS01B — the definitive 36V mid drive motor that benefits directly from the extended range this pack provides — as well as 36V hub motor conversion systems drawing within the 30A continuous discharge specification.

For the full range of compatible conversion kits across all voltages and formats, visit the Conversion Kit category page. For the complete battery range across all voltages and capacities, visit the Batteries category page.

Warranty and Returns

Every Ebike Battery 36V 35Ah purchased from All4eBikes is covered by a 12-month warranty against manufacturing defects, alongside a 30-day return window for complete purchase confidence.