Varstrom 36V 15.6Ah Downtube Battery

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The Varstrom 36V 15.6Ah lithium battery is a downtube-mounted power pack designed for electric bike conversion kits ranging from 250W up to 2000W, and it comes bundled with a charger for out-of-the-box convenience. It offers a solid 561.6Wh capacity that sits comfortably in the sweet spot for mid-range 500W to 1000W builds, providing a reasonable balance of range and weight. Overall it presents a cost-effective option for DIY e-bike builders who need a reliable, versatile battery without a premium price tag.
Key Features & Specs
| Voltage | 36V nominal, compatible with most standard e-bike controllers and motors |
|---|---|
| Capacity | 15.6Ah, delivering approximately 561.6Wh of usable energy |
| Compatibility | Supports motor kits from 250W up to 2000W, suitable for 500W to 1000W conversion builds |
| Mount Type | Downtube frame mount for a clean, integrated look on standard bicycle frames |
| Included Accessories | Comes bundled with a matching 36V charger, no separate purchase required |
| Cell Type | Lithium-ion cells with built-in BMS for overcharge, over-discharge, and short-circuit protection |
| Estimated Range | Approximately 30 to 60 miles per charge depending on rider weight, terrain, and assist level |
Best for: DIY e-bike builders and cycling enthusiasts looking to power a 500W to 1000W conversion kit with a reliable, affordable downtube battery that includes a charger and offers solid range for everyday commuting or recreational riding.