Triangle Ebike Battery 52V 25Ah

The Triangle Ebike Battery 52V 25Ah is a high-quality electric bike battery delivering 1300Wh of energy from Grade A 21700 EVE 5000mAh cells in a compact, frame-fit triangle battery case. Compatible with 48V and 52V eBike systems, this battery pack features 40A continuous discharge, an XT60 connector, full BMS protection and an 800-1000+ cycle life. The ideal Triangle Ebike Battery 52V 25Ah solution for mid-power hub motor builds, Bafang mid-drive conversions and long-distance touring setups. 6-month warranty included.

1300Wh in a Frame-Fit Triangle — The 52V Mid-Power Sweet Spot

The Triangle Ebike Battery 52V 25Ah is the battery that brings together the key qualities most riders are actually looking for in a conversion build: enough energy for meaningful real-world range, a voltage level that genuinely upgrades performance over standard 48V systems, a cell chemistry proven across hundreds of charge cycles and a form factor that integrates cleanly into any standard diamond-frame bicycle. At 1300Wh total energy — calculated from 52V multiplied by 25Ah — this electric bike battery delivers comfortable range for extended commutes, long trail rides and touring applications without the weight, cost or complexity of moving up to a 72V high-discharge pack.

The 52V platform is an increasingly popular choice among e-bike builders precisely because of where it sits in the performance spectrum. Running a 48V-compatible motor on 52V — as most 48V-rated hub motors and Bafang mid-drive systems safely support — produces noticeably stronger acceleration, a higher top speed and better sustained output under load compared to a true 48V supply, while remaining comfortably within the operating range of standard 48V controllers and motor systems. The Triangle Ebike Battery 52V 25Ah is the ideal battery pack for this upgraded-48V / true-52V approach to building a more capable electric bike without the full complexity of a 72V system.

Grade A 21700 EVE Cells — Consistent Quality Across Every Cycle

The cell specification of any lithium battery pack is the single most important factor determining its real-world performance, longevity and safety. The Triangle Ebike Battery 52V 25Ah is built around Grade A 21700 EVE 5000mAh lithium cells — a cell chemistry and grade specification that directly defines the pack’s quality above lower-cost alternatives built from ungraded or off-spec cells:

• Grade A qualification: Only cells that pass EVE’s highest internal quality control threshold are classified as Grade A. They demonstrate consistent capacity from cell to cell within the pack, matched internal resistance for balanced charge and discharge across the cell groups, and verified performance retention across the rated cycle life. Mismatched or off-spec cells in a pack accelerate degradation, reduce usable capacity and introduce safety risks that Grade A cells eliminate at the manufacturing stage.
• 21700 format: The 21700 cell (21mm diameter, 70mm length) offers higher energy density per cell than the older 18650 format that was standard in earlier e-bike battery packs. This allows the triangle battery to achieve its 25Ah capacity in a compact, lightweight case suited to standard frame triangle spaces without excessive bulk or weight.
• EVE 5000mAh chemistry: EVE Energy is a well-established lithium cell manufacturer whose 21700 5000mAh cells are widely validated in electric bike and energy storage applications. The 5000mAh per-cell rating contributes directly to the pack’s 25Ah total capacity, and the cell’s stable chemistry under moderate discharge rates makes it particularly well suited to the consistent mid-range current draws of hub-motor and mid-drive e-bike systems.
• 800-1000+ cycle life: The Triangle Ebike Battery 52V 25Ah maintains at least 80% of its original capacity after 800 to over 1000 full charge-discharge cycles under normal operating conditions — a durability figure that represents years of regular use before any perceptible reduction in riding range.

48V and 52V Compatibility — One Battery, Two System Generations

One of the most practically useful specifications of the Triangle Ebike Battery 52V 25Ah is its compatibility with both 48V and 52V eBike systems. This dual compatibility means the pack works seamlessly with the largest installed base of conversion motors and controllers currently in use — every 48V-rated motor and controller in the All4eBikes range, as well as systems specifically designed around 52V nominal voltage.

For riders running a battery pack alongside a Bafang mid-drive motor, the 52V configuration is particularly well suited. The BAFANG BBSHD Mid Drive 1000W and the BAFANG BBS02B 750W CAN-BUS both operate at 48V and benefit from the additional voltage headroom a 52V electric bike battery provides — producing stronger initial acceleration, a higher no-load speed and improved hill-climbing performance compared to a true 48V supply. For hub-motor builds in the mid-power range, the Rear Hub Motor 48V-52V 1500W is an excellent motor pairing for this triangle battery, drawing well within the pack’s 40A continuous discharge rating while benefiting from the 52V performance uplift.

40A Continuous Discharge — Matched to Mid-Power Motor Systems

The 40A continuous discharge rating of the Triangle Ebike Battery 52V 25Ah is deliberately matched to the current demands of mid-power hub-motor and mid-drive systems in the 1000W-2000W range. At 52V and 40A continuous, this electric bike battery sustains up to 2080W of continuous power output — sufficient for the vast majority of conversion builds that pair 48V or 52V motors with standard riding conditions including hill climbing, mixed terrain and sustained highway-speed riding.

The 40A continuous rating also works in favour of the pack’s long-term cell health. Operating cells at a moderate C-rate — as 40A continuous represents for a 25Ah pack — generates less heat per cycle, reduces internal resistance growth over time and contributes directly to achieving the upper end of the 800-1000+ cycle life rating. Riders who need higher continuous discharge for 3000W+ systems should consider the Triangle Ebike Battery 72V 30Ah 100A with its 100A continuous rating, or the Triangle Ebike Battery 52V 30Ah for additional capacity at the same voltage level.

BMS, Connector and Casing — Built for Reliable Daily Use

The Triangle Ebike Battery 52V 25Ah incorporates a full Battery Management System providing protection against overcharge above 58.8V, over-discharge, overcurrent above the peak rating, overheating and short circuits. This comprehensive BMS protection layer ensures the triangle battery operates safely across the full range of riding conditions — from cold morning starts to sustained summer climbs — and preserves cell health across the rated cycle life by preventing operation outside safe voltage and temperature parameters.

The XT60 connector is a widely used, reliable high-current connector rated for the discharge levels this battery pack operates at, and is compatible with the XT60 power leads supplied with mid-power controllers and systems across the All4eBikes range. The durable, heat-resistant outer casing protects the cells and BMS from dust, moisture and everyday physical impacts — making the Triangle Ebike Battery 52V 25Ah a robust choice for riders who use their converted bicycles in real-world conditions rather than keeping them for fair-weather rides only. A purpose-made Bag for Triangle Battery is also available for transport and storage protection.

Frame Compatibility and Installation

The Triangle Ebike Battery 52V 25Ah mounts inside the main triangle of a standard diamond-frame bicycle — the space enclosed by the top tube, down tube and seat tube. The rubber securing straps allow tool-free installation and removal for on or off-bike charging. The pack’s triangle geometry is designed to fit a wide range of standard frame sizes without modification, and its placement inside the frame triangle keeps the battery weight low and centred for optimal handling. For the full range of triangle and downtube battery options across all voltage levels, browse the complete All4eBikes battery range.

Order the Triangle Ebike Battery 52V 25Ah today — a high-quality triangle battery built on Grade A EVE cells, matched to the real-world demands of mid-power e-bike builds and designed to deliver consistent, reliable performance across hundreds of charge cycles for the life of your conversion.