SPARE BATTERY RECHARGEABLE 12V 5.5A/H THUNDERBIRD EF-203

Charge the battery fully before first use using a compatible charger—this usually takes 8-10 hours depending on your charger. Connect the battery terminals to your Thunderbird EF-203 energiser, making sure the positive and negative leads are the right way around or you'll damage the unit. Once connected, your energiser is ready to run. Check the battery charge level monthly during the fence's operating season and recharge when it drops below half capacity to keep your fence working properly. Tips: Keep your spare battery stored in a cool, dry shed rather than leaving it in direct sun or extreme heat, which shortens its lifespan. Rotate between your main and spare battery every few months so both stay in good working condition and you're never caught with a dead battery when your mob's at the gate.