B4 Series car battery indicator

Item Name B4 Series car battery indicator Item NO Size(mm)Head diameter Head thickness Sealing diameter Sealing length Length Push in type with two ball B401 Ø21.3 2 Ø19.16 14.5 45/48/50/55/58/ 60/63/65/68/70 B402 Ø22.9 2 Ø20.77 14.5 1.The battery charge indicator is uses for to survey the accumulator cell performance. 2.With the read bead and green bead in it, battery charge indicator can work. 3.Chargecapacity high,thegreenbeadwillfloat;Charge capacitylow,theredbeadwillfloat. Itisnoticedthatwecouldmakeanewmoldaccordingtotherequireofcustomer.