News
5S2P (18V) Power Tool Batteries: Why Every Bran...
Why do DeWalt, Makita, and Snap-on rely on the 18V 5S2P layout? Because it balances voltage, current, weight, and runtime. Here’s why 5S2P dominates—and how a professional rebuild can bring...
5S2P (18V) Power Tool Batteries: Why Every Bran...
Why do DeWalt, Makita, and Snap-on rely on the 18V 5S2P layout? Because it balances voltage, current, weight, and runtime. Here’s why 5S2P dominates—and how a professional rebuild can bring...
21700 vs 18650 Batteries: Key Differences, Adva...
By RenewSpark • Updated: September 6, 2025 Wondering whether to choose 21700 or 18650 cells for your next project? Both are widely used lithium-ion formats—but they serve different needs. In...
21700 vs 18650 Batteries: Key Differences, Adva...
By RenewSpark • Updated: September 6, 2025 Wondering whether to choose 21700 or 18650 cells for your next project? Both are widely used lithium-ion formats—but they serve different needs. In...
How to Build a 2S2P 7.4V 21700 Li-ion Battery P...
DIY step-by-step tutorial to build a powerful 2S2P 7.4V 21700 Li-ion battery pack with a 30A BMS and XT60 connector. Includes parts, tools, wiring instructions, and safety notes.
How to Build a 2S2P 7.4V 21700 Li-ion Battery P...
DIY step-by-step tutorial to build a powerful 2S2P 7.4V 21700 Li-ion battery pack with a 30A BMS and XT60 connector. Includes parts, tools, wiring instructions, and safety notes.
How to Build a 2S1P 7.4V 21700 Li-ion Battery P...
Step-by-step tutorial to build a compact 2S1P 7.4V 21700 Li-ion battery pack with a 2S 20A BMS and XT30 connector. Includes parts list, tools, wiring notes, and safety checks.
How to Build a 2S1P 7.4V 21700 Li-ion Battery P...
Step-by-step tutorial to build a compact 2S1P 7.4V 21700 Li-ion battery pack with a 2S 20A BMS and XT30 connector. Includes parts list, tools, wiring notes, and safety checks.
Do You Need Cell Spacers for 18650/21700 Packs?...
Learn when you actually need cell spacers for 18650 and 21700 battery packs. Covers safety, rigidity, heat, and when fish paper + shrink wrap is enough.
Do You Need Cell Spacers for 18650/21700 Packs?...
Learn when you actually need cell spacers for 18650 and 21700 battery packs. Covers safety, rigidity, heat, and when fish paper + shrink wrap is enough.
How to Rebuild a Snap-on 18V Battery Pack (CTB8...
Learn how to rebuild a Snap-on 18V battery pack — including the CTB8185, CTB8187, and CTB8189 models — all of which use the 5S2P configuration with Samsung 25R 18650 cells....
How to Rebuild a Snap-on 18V Battery Pack (CTB8...
Learn how to rebuild a Snap-on 18V battery pack — including the CTB8185, CTB8187, and CTB8189 models — all of which use the 5S2P configuration with Samsung 25R 18650 cells....
