Yes.
All lead acid batteries emit the products of the breakdown of water so you
must vent them you cant seal the in a gas tight environment. There are some
cals that allow for the hydrogen % to be kept below 2% for safety and they
give you the number of air changes per hour for a given battery. I cant
remember them but Tuesday I can send a spreadsheet if you need

Steve

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
V G
Sent: 30 December 2011 22:41
To: PICLIST
Subject: [EE] Quick question - does a SEALED lead acid battery need to
becharged in a ventilated area?

Quick question - does a SEALED lead acid battery need to be charged in
a ventilated area?
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