GOOD BATTERY

Voltage check: For a good battery, the centre "V" LED should light up as soon as the TestMate mini is connected. If the engine has been running immediately prior to this, the voltage may well be a LED or 2 higher.

Cranking: The instant the ignition key is turned (or starter button is pushed) the battery must provide very high current and at the same time remain at a voltage level necessary to get the starter motor running quickly and smoothly. After the initial voltage drop the voltage will rise slightly (necessary for the ignition to supply a strong spark) until the motor starts. The lower the initial and then subsequent voltage during cranking, the longer it may take for the engine to start.

Charging: With the engine running the charging system should recharge the battery. Expect the voltage to rise slowly towards 14,5V. An even and steady rise is an indication of a good charging system and a strong battery.

Notes: Some power-sport vehicle systems may charge at a slightly higher voltage. This is normal. If a filler cap battery is fitted, check the fluid level regularly. Off-road motorcycles and sports ATVs are usually fitted with low-power charging systems which are unable to support many accessories and which can take some time to fully recharge the battery. It may take long to fully recharge the battery and the charging system is not able to support many accessories. For any vehicle - the lowest acceptable charging voltage is 14V with the vehicle in motion and all lights and accessories switched on. Otherwise the battery will slowly deteriorate (lead sulfate will form on the plates). Extend your battery life by using a charger that can desulfate and fully recharge your battery between use (OptiMate desulfater-charger and AccuMate range).