Grin 36V 20.5Ah Downtube Battery (B3620)
A 36V (10s) downtube-mount e-bike battery from Grin Technologies built with 40 Samsung INR21700-53G cells in a 10s4p configuration, rated 21.2Ah nominal / 20.5Ah typical. Features a 40A continuous BMS, an On/Off switch, and a 3-pin ST3 charge port (42.0V full charge, up to 8A charging). UN38.3 certified for shipping and individually discharge-tested at Grin to verify capacity.
In brief: 36V 20.5Ah (738Wh) NMC battery. Hailong form factor. 40A continuous discharge. From $470.
Specs verified Jul 9, 2026
Where to Find
Prices tracked across 1 sellerPrice History
Price History
Price changes tracked by the crawler
Current best price $470.00. Over the past 90 days: low $470.00, high $500.00, average $484.48 — down 3% vs average.
- Grin Technologies
All Records
3 price records in this period
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
Grin Technologies(3 records) | |||||||||
| Jul 1, 202605:06 AM | $470.00 | — | $470.00 | $0.00 | — | — | — | Yes | active |
| Jun 17, 202609:26 AM | $470.00 | — | $470.00 | $30.00 | — | — | — | Yes | active |
| Jun 3, 202610:45 AM | $500.00 | — | $500.00 | Initial | — | — | — | Yes | active |
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Specifications
Cell Configuration
- Cell
- Configuration
- 10S4P
Electrical
- Voltage
- 36V
- Capacity
- 20.5Ah
- Energy
- 738Wh
- Chemistry
- NMC
- Continuous Discharge
- 40A
- Max Charge Current
- 8A
Side Profile
- Shape
- Hailong
Mounting
- Removable
- Yes
- Mounting Type
- Downtube
Features
- Charge Connector
Physical
- Weight
- 4.02 kg
- Dimensions (L×W×H)
- 365mm × 95mm × 100mm
