Review on Efficient 12 Volt Automatic Battery Float Trickle Charger by Cen-Tech - A Reliable Power Solution by Ashutosh Takumatla

Many car electronics draw a small current from the battery even when the battery is switched off. In addition, batteries discharge over time even without a load. This keeps the battery charged if you don't ride often enough. Nothing special is required; it just has to deliver more power than computers and radio use. Polarity must be observed when connecting, and connecting the clamps can cause problems if you do not have easy access to the battery positive terminal. Not for charging dead batteries; This is to keep her from dying.