It will be fine... natural ventilation is fine just don't seal it in a box... Steve -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of V G Sent: 30 December 2011 23:36 To: Microcontroller discussion list - Public. Subject: Re: [EE] Quick question - does a SEALED lead acid battery need tobecharged in a ventilated area? On Fri, Dec 30, 2011 at 6:24 PM, Steve Smith wrote= : > Yes. > All lead acid batteries emit the products of the breakdown of water so yo= u > 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 the= y > 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 Just wondering if it was safe to charge it indoors. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .