I have been off Lead/Acid Batteries for years, Having found Frame rust & Chrome damage, to be unacceptable. My experience with Absorbed Glass Mat Batteries has been very positive. They hold a charge longer, have greater Cranking Power & last a long time.
When I got my used 2010 G5 Deluxe, it came with an EXIDE Lead/Acid Battery. It started fine & I rode it alot, with no startiing issues. One of the first items I chose to change was the Battery, which had already caused some rust on nearby frame pieces, I didn't want to chance it Puking on my Chrome.
I purchased the DECA 14ah AGM (made in USA) BATTERY on Ebay. It arrived fully charged & fits my bike well. I have had nothing but starting problems since, The first time my conections loosend from vibration, I Locktite'd those. Now it looses its charge just waiting to be ridden. some times after 2 stops, while running errands it will not crank. I can only assume it is my battery, unless there is a simple method of testing the entire charging system?
The DECA AGM BATTERY comes with NO mention of any warantee,or even company contact info in the instructions or on the box. The Ebay bunch I bought it from will not reply. I bought the DECA because it was made in the USA-Now I wish I bought the Chinese MOTOBATT. Not Happy with Stinking DEKA!