The permanently sealed VRLA battery never needs refilling, however, it still needs periodic charging. This is a condition where a crystal like material forms on the lead plates. This is NOT caused by a faulty battery, it is a fault with maintenance.
Yuasa YTZ10S (WC) 12V Factory Activated High Performance MF VRLA Battery
Yuasa TTZ14S (WC) 12V Factory Activated MF VRLA Battery
Yuasa YTX12 (WC) 12V Factory Activated MF VRLA Battery
Yuasa GYZ16HL (WC) 12V Factory Activated High Performance MF VRLA Battery
Yuasa YTX16 (WC) 12V Factory Activated MF VRLA Battery
Yuasa TTZ10S (WC) 12V Factory Activated MF VRLA Battery
