Batteries With Central Gas Vent

Battery Central Gas Venting

CAUTION:
- Always install newest type batteries with central gas venting.
- Always use original battery sealing plugs. The plugs must be installed with an O-ring seal.

There are two different types of battery with central gas venting:
- Batteries with hose or connection for central gas venting
- Batteries without hose or connection for central gas venting

NOTE: The latest generation of batteries are equipped with a central gas venting system and a finemesh flame trap.
- Function: The gases produced during charging escape through a central opening in top of battery cover. The flame trap which prevents flammable gases in battery from igniting is also located at this point.
- The flame trap comprises a small round fiberglass mat, about 15 mm in diameter and 2 mm thick. It has an effect similar to a valve, and thus allows gases produced in battery to vent.

Battery posts must no longer be greased.

To avoid damaging battery housing, do not use force when attaching battery clamps; press them on by hand.

Notes on operation of central gas venting system:
- On batteries with central gas venting hose/line, make sure that hose does not become disconnected, otherwise the battery will not be properly vented.







- On batteries with no central gas venting hose/line, it is important to ensure that opening in top cover -arrow-is not clogged.