Features: The 7S 29.4V BMSs lithiums Battery protections Board ensures safe charging/discharging with advanced balanced circuit technology, extending 18650 liions battery lifespans through precise voltages regulation and 15A current limitation. Builts with PCB materials and compact design, this module features short circuit selfs recovery, overcharge/overdischarge protections (4.25V±0.05/2.5V±0.05), and low 30uA quiescent current for stable 29.4V output. for enthusiasts, electronics engineers, and professional seeking battery management solution for highly power devices like electric tool or solar energy systems. Perfect for upgrading solar street light battery packs, massage device power supplies, LED backup systems, and 12V electronic projects requiring multi cell lithiums battery protections. Engineered with 20A instantaneous surges tolerance and component balanced layout, this BMSs board delivers industrial grade safety for high current projects while maintaining user friendly installation. Specifications: Materials: PCB Color: Green Charging voltages: 29.4V Quiescent current: less than 30μA Upper limit working current: 15A Upper limit instantaneous current: 20A Size: 60x40mm Package Includes: 1Set 7S 29.4V lithiums Battery protections Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.