Description Gerbing Gyde 7V Extended Life Battery 7000 mAh Gerbing’s rechargeable 7 volt lithium battery pack with integrated microprocessor and remote control allows you the freedom to stay warm almost anywhere. Gerbing 7V Extended Life Battery Works With: Gerbing Core Heat Vests Gerbing Core Heat Jackets Gerbing Core Heat Gloves Gerbing Core Heat Socks Gerbing Core Heat Cushions Gerbing Gyde 7V Extended Life Battery 7000 mAh