Car Battery Charger...

[LazarusShort]

It has 2 settings, one for sealed and one for not. What does it do differently in each setting?

[TWR]

I would say the when the sealed unit reaches it's charge the Charger will Auto switch off as not to damage the unit. the other type should have plastic screw caps that can be removed to let pressure out.

[Clanad]

Never use the non-sealed setting on a sealed or "Gel-cell" battery. The cells on the gel-cell are designed to only accept about 2.3 volts per hour, while the previously standard wet-cell battery could accept nearly 10 volts per hour, since it vented gasses during the charging cylce, unlike the gel-cell...

Always remove the gel-cell battery from the car for charging and let it sit for at least 1-2 hours to arrive at a stable temperature before charging. Even though it's sealed, use gloves and a face guard when removing it.

Lastly, if you have a sealed or gel-cell battery, and it has been severely discharged (tried to start the car to the point it won't engage the starter any more) the battery's voltage should be checked with a voltmeter before attempting to charge it. A 12 volt battery discharged below about 11.3 volts will probably require a special charger...

[LazarusShort]

OK Thanks