Collection: All Products
Explore the full RenewSpark catalog of batteries, battery packs, and DIY parts. From 18650 and 21700 cells to BMS boards, nickel strips, and custom cases, find everything you need to power your projects in one place.
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2S 8.4V 20A Lithium Battery BMS Protection Board with Balance – AITRIP
Regular price $7.99 USDRegular price -
Clear 21700 Battery Storage Case – Holds 2 Cells, Protective Carry Box
Regular price $4.95 USDRegular price -
Molicel P42A – 21700 3.6V 4200mAh 45A Li-ion Cell
Regular price $6.99 USDRegular price$8.99 USDSale price $6.99 USDSale -
21700 Battery Insulator Rings – Precision Cut, Adhesive Fish Paper (550 pcs)
Regular price $11.95 USDRegular price -
Samsung 18650 25R – 3.6V 2500mAh Li‑ion Cell (Flat Top)
Regular price $3.99 USDRegular price$5.99 USDSale price $3.99 USDSale -
RIG 18V 10-Cell 18650 BMS – Complete DIY Battery Kit (Compatible Style)
Regular price From $49.00 USDRegular priceSold out -
BOS 18V 10-Cell 18650 BMS – Complete DIY Battery Kit (Compatible Style)
Regular price From $49.00 USDRegular priceSold out -
HIT B22 21.6V 6‑Cell 18650 BMS – Complete DIY Battery Kit (Compatible Style)
Regular price From $44.00 USDRegular priceSold out -
RYO 18V 10-Cell 18650 BMS – Complete DIY Battery Kit (Compatible Style)
Regular price From $49.00 USDRegular priceSold out -
M18 18V 10-Cell 18650 BMS – Complete DIY Battery Kit (Compatible Style)
Regular price From $49.00 USDRegular priceSold out -
DCB205 20V 10S 18650 BMS – Complete DIY Battery Kit
Regular price From $49.00 USDRegular priceSold out -
5.5×2.1mm DC Power Jack Connectors – Female Pigtail (with Wire) & Male Plug – Multi‑Pack
Regular price From $3.99 USDRegular priceSold out -
JST‑XH 2.5mm 2‑Pin Connector with 24AWG Wire Leads (150mm, Tinned Ends) – Multi‑Pack
Regular price From $4.99 USDRegular priceSold out -
Pure Nickel Strip 0.2mm × 10mm – Small Rolls for Battery Pack Welding
Regular price From $4.99 USDRegular priceSold out -
XT60 Connectors & Pre‑Wired Female Plug with 14AWG Wire (10–15cm)
Regular price From $2.49 USDRegular priceSold out -
XT30 Connectors & Pre‑Wired Female Plug with 18AWG Wire (10–15cm)
Regular price From $1.49 USDRegular priceSold out -
1S 3.7V 18650 BMS Protection Board with Nickel Strips – 3A Single Cell Power Bank DIY
Regular price From $0.99 USDRegular priceSold out -
18650 Power Bank Case – USB‑C PD 22.5W + QC3.0, 15W Wireless, LCD (DIY Shell or Complete Pack, Black)
Regular price From $19.99 USDRegular priceSold out -
18650 Portable Power Bank Case – Single-Cell USB Charger Tube with LED (DIY Shell or Complete Pack, Black)
Regular price From $6.99 USDRegular price$9.99 USDSale price From $6.99 USDSale -
4-Cell 18650 Power Bank Case – 12000mAh QC Dual-USB + LCD Display (DIY Shell or Complete Pack, Black/White)
Regular price From $14.99 USDRegular priceSold out -
16-Cell 18650 Power Bank Case – USB-C PD 22.5W + 15W Qi Wireless, LCD (DIY Shell or Complete Pack)
Regular price $24.99 USDRegular priceSold out -
18650 Battery Insulator Rings – Precision Cut, Adhesive Fish Paper (550pcs)
Regular price $11.95 USDRegular price -
Electrical Insulating Adhesive Paper 0.2mm – 200mm x 3m (7.9in x 9.9ft) Battery Pack Insulation Sheet for Lithium Cells & Circuit Boards – Green
Regular price $9.99 USDRegular price -
2 Rolls 10mm x 33m (108ft) Heat Resistant Polyimide Tape – High Temp Kapton Adhesive for Electronics, Soldering, Sublimation & Circuit Boards
Regular price $7.99 USDRegular price -
Snap-On CTB7185 18V Battery Rebuild – 5000mAh 20A- New High-Drain Cells
Regular price $68.16 USDRegular price$0.00 USDSale price $68.16 USDSold out -
2x 18650 2600mAh 3.7V 20A Flat Top Li-ion Batteries + Case – Flashlight, RC
Regular price $14.99 USDRegular price$0.00 USDSale price $14.99 USD -
Snap-On Battery Rebuild Service CTB7185 CTB8185 CTB8187 – Send Yours In
Regular price From $65.95 USDRegular price -
8x BAK 18650 2600mAh 3.7V Li-ion Batteries with Clear Plastic Case – New
Regular price $43.99 USDRegular price$0.00 USDSale price $43.99 USD -
2x Samsung 25R 18650 2500mAh 20A Flat Top Li-ion Batteries + Case – Authentic
Regular price $15.99 USDRegular price$0.00 USDSale price $15.99 USD -
4x BAK 18650 2600mAh 3.7V Li-ion Batteries with Clear Plastic Case – New
Regular price $23.99 USDRegular price$0.00 USDSale price $23.99 USD -
Snap-On CTB7185 18V Battery Rebuild – 5000mAh 20A- New High-Drain Cells
Regular price $68.16 USDRegular price$0.00 USDSale price $68.16 USDSold out -
8x Samsung 25R 18650 2500mAh 20A Flat Top Li-ion Batteries + Case – Authentic
Regular price $44.99 USDRegular price$0.00 USDSale price $44.99 USD -
4x Samsung 25R 18650 2500mAh 20A Flat Top Li-ion Batteries + Case – Authentic
Regular price $24.99 USDRegular price -
2 x Molicel P42A 21700 4200mAh 45A Rechargeable Battery Cell + Case - Authentic
Regular price $14.99 USDRegular price$0.00 USDSale price $14.99 USD -
Makita 18V 5.0Ah Battery – OEM Case – Rebuilt with New Cells – Tested & Working
Regular price $64.95 USDRegular price -
XT60 13 Inch Extension for Rc Battery Charger 14Awg Silicone Wire Male to Female
Regular price $7.15 USDRegular price