Dynasty AGM battery, UPS-300MR?

[TDC]

I haven't researched batteries yet but just stumbled on a couple slightly used Dynasty UPS-300MR. Would these be a good choice?  I'm not yet familiar with the pros and cons of this battery type.
http://www.batterysharks.com/C-D-Dynasty-UPS12-300MR-p/dy-ups12-300mr_bx12-300.htm?gclid=CP2Ln-Hb88MCFYREaQodEA8Aiw

[Mary B]

Poor choice for deep cycle use. They are designed for standby service.

[dnix71]

The specs say "new" up to 300 cycles at 100% DOD. I would say it depends on the price. "Used" sounds like a warning on any battery unless the price is real good. People don't get rid of usable stuff without a reason. They probably failed a test somewhere. Depends on what you can afford and what you want to do with them.
If they are local, you won't be paying to ship them.

[tanner0441]

Hi

I don't know the price of batteries in the US but in the UK an 85Ah marine grade VRLA deep cycle battery is around £80, and a 90-95Ah AGM around £90 so if that is a second hand battery then it sounds expensive for an unknown quantity health wise.

Brian.