The Hybrid Battery consists of multiple small cells connected in series like a train to provide a high voltage of 400 volts or higher. These series of small copper connectors get corroded due to the high moisture content from our humid climate. The corrosion in turn results in poor conductivity between the individual cells. Take for example your TV remote control, sometimes, you might need to knock it a couple of times or remove the battery cover to move the batteries around to get it to work. If you remove the old batteries, more often than not, the metallic connectors of the remote control are corroded and moving or knock the batteries ‘helped’ to regain the connection and power. You can’t do the same thing to the Hybrid battery and ‘knock’ it to get it to provide the full voltage. Instead, the Hybrid battery is removed and each and every individual terminal is carefully cleaned. The Hybrid charging system can then optimal charge the cells properly & accurately. If not, due to the poor connection, the individual cells are improperly charged, some over-charged, some under-charged and this damages the longevity of Hybrid battery cells.