[davewaldo]

I too have found batteryworld to be quite good.

I recently got a 33AH true deepcycle glass matt battery. It was about $160 I think. But this type of battery is not as sensitive to charging as a gel battery, but still has the advantages of no spillage possible. It is a battery made for electric wheelchairs. Most sealed Leadacid batteries are not deep cycle and if used that way will die very quickly.

I have found this battery to be the best I could find. It is rated to about 1000 full cycles. Most marine deepcycle batteries are rated to around 200-300. So if I only do half discharge cycles then I should get 2000 cycles.

Its very important to charge the battery as soon possible after it is used. Damage is caused if a battery is left empty for an extended period. Leaving it on a trickle/maintenance charger is the best.

Hope this helps, I'm just repeating info I have been told during my research when I bought my battery.