21700 Battery Holder – 1×3
1×3 21700 battery holder is designed to securely mount three 21700 lithium-ion cells in a row. It can be used for:
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Series configuration (3S = 11.1V nominal)
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Parallel configuration (1P x 3 = 3.7V, 15Ah for 5000mAh cells)
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Custom EV, DIY battery packs, or prototyping
21700 Battery Holder – 1×3 specification
| Parameter | Details |
|---|---|
| Cell Size | 21700 (21mm diameter × 70mm length) |
| Configuration | 1 Row × 3 Cells (1×3) |
| Material | ABS Plastic or Nylon + Fiber Reinforced |
| Contact Type | Spring-loaded nickel-plated or brass plates |
| Mounting Type | Through-hole or screw-mount base |
| Electrical Rating | Up to 20A (with high-current contacts) |
| Spacing | ~22mm center-to-center cell gap |
| Dimensions (approx) | 78mm (L) × 23mm (W) × 75mm (H) |
| Polarity Markings | Yes (on base for + and −) |
| Safety | Short circuit protection with heat-resistant plastic |
Applications:
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Lithium-ion battery pack prototyping
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EV battery design (small packs for scooters, drones)
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Solar storage banks
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Flashlights, DIY electronics
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Educational battery experiments
