When battery holder is exposed in wet environment, the battery spring is easy to rust.

Compression with battery holder negative electrode: We should make sure the batteries can not be thrown out when battery is loaded, even if there is no battery cover for battery holder.

In fact these are some materials suited for your contacts of button cell battery holder: 1. stainless steel. 2.brass. 3.phosphorus bronze.

The battery holder can be connected with ordinary dry battery, alkaline battery and rechargeable battery from C, D, AA, AAA, 18650 to 9v battery. The batteries are connected in series or in parallel, and the output voltage is different according to different battery types. The electricity of battery......

Keyu coin cell holder CR2477 is usually used for electronic products which need power supplies 3V with nice conductive contacts. They are usually used for PC boards, electronic toys, remote controls, etc.

8 AA battery holder with 2 PH2.0-2P Heads is customized product for our client. This battery holder is designed for batteries in parallel, suited for devices which need 6V power supplies.