Hign-concerned Chemical: None Charging Current: 40A Usage Scenario: Power Balance Function: Active Balanced Handware or Smart: SMART Charge and Discharge Port: Common Port Type: LIFEPO4 Battery Function: Overcharge Protection,Over Discharge Protection,Overcurrent Protection,Short Circuit Protection Support IOS/Android system/Harmony Os The app be updated irregularly The four major modes provide greater security and peace of mind Storage Mode In transportation, storage, offline or wireless transmission off mode. The is storage mode. Does not consume battery pack current Normal Working Mode When the charger is inserted in the storagemode and off mode, the immediatelyreturn to the normal working mode, and all theprotection functions return tonormal working. Color: Silver Material: Aluminum Alloy Package Contents: 1 * protection board 1 set * battery connection cable 1 * temperature line Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.