I saw the following post on Audioasylum and was wondering if the concerns raised are valid:
http://www.audioasylum.com/audio/general/messages/441968.html
Hi balu,
Welcome to Audiocircle!
There is no need to worry about charging Sealed-Lead Acid batteries indoors. As long as you use the charger that I provide (or one that I recommend....for international orders) there is no need to be concerned.
Best regards,
Vinnie