You must note that this product is only a charger (not a starter, so there is no startup function). Before using the product, you must pay attention to the correct installation of the positive and negative poles, and follow the operating methods. Product Specifications: Battery range: 12V/24V 6Ah-150Ah Battery range: MOTO 6-30Ah & CAR 30-100Ah Charging current: 4~ 8A Battery Type: All SLA batteries (Wet, MF, GEL, VRLA and Flooded), AGM (EFB), LiON Material: ABS + PC Working Temperature: -10 ~ 45 ° C (14 ~ 113 ° F) Weight: 650g Dimensions: 23 x 13 x 6.5 cm About this item： 【8A car charger】12V 8A and 24V 4A car chargers have excellent performance and the charging speed is 30% faster than 8A or 5A chargers. Charge or repair all 12V and 24V lead acid auto, marine and deep cycl.