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21700 Rechargeable C Batteries

Capacity: 5000mAh
Voltage: 3.6V
Weight: 77g
Size:Φ21*H70mm

⭕ High Capacity

⭕ Long Cycle Life

⭕ Lightweight with Compact Size

⭕ Eco-Friendly Choice

⭕ Safe

⭕ Multiple Options

| Products details

Product Specifications

ModelCapacityVoltageWeightSizeCombinationCharge/ Discharge RateInternal Resistance
BP217005000mAh3.6V77gΦ21*H70mmOne-piece Design1/5C≤30 mΩ

LanDazzle 21700 Rechargeable C Batteries Features

  • High Capacity (5000mAh, 3.6V) — Reliable energy storage for extended device runtime.
  • Strong Output Performance — Continuous discharge up to 15A, peak discharge up to 20A.
  • Compact Cylindrical Design (Ø21.75 × 76.1 mm) — Standard size with optimized energy density.
  • Lightweight (≈77g) — Balances high capacity with manageable weight.
  • Low Internal Resistance (≤30 mΩ) — Ensures efficient power delivery and minimal heat.
  • Wide Temperature Range — Charging: 0 ~ +45℃; Discharging: -20 ~ +60℃.
  • Durable Cycle Life — Maintains ≥80% of initial capacity after 300 charge/discharge cycles.
  • Built-in Safety Protection — Overcharge, over-discharge, overcurrent, and short-circuit safeguards.
  • Certified Quality — Compliant with UN38.3, RoHS, IEC62133, UL1642, and other international safety standards.
  • Versatile Applications — Ideal for e-bikes, power tools, energy storage, and other high-drain electronics.

LanDazzle Rechargeable C Batteries Series

ModelCapacityVoltageWeightSizeCombinationInternal Resistance
BP2610511000mAh3.6V163gΦ27*H114mmPower Indicators≤ 30 mΩ
BP186503500mAh3.6V55gΦ18.8*H70.8mmOne-piece Design≤40 mΩ
BP183501100mAh3.6V25gΦ18.8*H40mmOne-piece Design≤60mΩ
BP16340850mAh3.6V20gΦ16.8*H33.5mmOne-piece Design≤80mΩ
BP145001000mAh3.7V22gΦ14.2*H50mmOne-piece Design≤120mΩ
BP141001800mAh3.7V49gΦ14.5*H99.5mmOne-piece Design≤120mΩ
BP10880700mAh3.7V20gΦ10.5*H88mmOne-piece Design≤120mΩ
BP10440300mAh3.7V9gΦ10.6*H43mmOne-piece Design≤ 165 mΩ
| Demensional

21700 rechargeable c batteries dimension

H:76.1±0.3mm
D:21.75±0.15mm
H1:0.8±0.2mm
D1:6±0.10mm

| Applications
| Downloads

Product Files:

File Name Format Size Download
BP21700 PDF 285KB Download

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