Introduction: 72V 29Ah Lithium-ion Battery Pack

By www.facebook.com/evmadrid
About: We design and create batteries, electric vehicles and DIY electronics. We research, develop and document our creations to inspire others. Our mission is to bring resources to people all over the world and en…

This is how we build the 20s10p battery pack we made for the Nobuo-01 solar assisted electric vehicle. this is our highest energy pack at the moment with the following specifications:

- 20 serial, 10 paralleled 2.9Ah 3C max continuous Samsung INR18650 29E LiNiCoAlO2 (NCA) Lithium-ion cells

- Spot welded with 0.1mm x 6mm pure nickel strips.

- 45A max continuous balancing function built-in BMS.

- 12 AWG Wires according with the BMS and the aimmed max discharge of 40A continuous (for higher discharge you need 10AWG or greater gauge)

- 460mm perimeter insulation shrink wrap

- Anderson SB50 for discharge port

- XT60 for charge port- weight: 9.65Kg

- Volume: 3.8 litersPerformance:

- 80Amax continuous capabilities

- 160Amax burst capabilities

- 45Amax continuous limited

- 130Amax burst limited

- energy density: 540Wh/L

- specific energy: 215Wh/Kg.