I'm not sure if much has changed in the battery area, though I'd like to hear it if it has. But I have two notes saved:
1. where Robin Ellis posted good advice about this on 26 March 2006:
"the batteries that I use, AGM20 amp deep cycle, are now also available in a 22amp/hr version. Both these batteries fit the standard Armortek battery tray. I thoroughly recommend them.ROBIN.
http://www.golftrolleybatteries.co.uk/d ... ro_m_id=50
Squadron AGM 20 Deep Cycle 12 volt
Capacity : 20 Ah @ C20
CCA : 275 Amps SAE
Dimensions : 181mm 7.13 in L x 76mm 3 inch W x 167mm 6.57 TH
Weight: 6.8 kg
Unlike 'conventional' lead acid batteries, the liquid electrolyte in AGM batteries is absorbed in a glass mat separator which is sandwiched between the plates. Saturation of the mat is typically around 90% which means that the oxygen produced during charging can can easily find its way to the negative plate and recombine into water. Since an AGM battery is totally sealed, it is leak proof in any position and therefore ideal for marine applications.
AGM batteries are totally maintenance free, offer extra performance and service life, have a typical life span of between five and eight years and have a shelf life of up to 12 months if stored fully charged.
AGM batteries are also capable of recovery even after repeated deep discharges
Squadron AGM batteries come with 3 year Guarantee for complete peace of mind."
I might have saved Robing from having to type that over again.
2. In Sept. 2006 Robert E Morey in the USA posted about batteries for his Sherman:
"For those interested I've found a good source of AGM type batteries in the USA. I found the Universal Batteries UB12220, 12 V, 22 Ahr, 420 cold cranking Amps, to be the best size and power so far in a small package (7.13" L x 3" W x 6.6" H) and 14 lb each. A good place to get them is:
http://www.ebatteriestogo.com/GEL_Batteries.htm
Ask for Bob, he was a very nice and helpful gentleman. Plus they had a bunch in stock! A little spendy at $70.95 ea but with free shipping. He also recommended a charger to charge both batteries in series to 24V at one time vs charging one battery at a time - very helpful."
Hope that gets the thread off to a good start. Oh, and if you choose bigger batteries and or a custom tray, then watch the clearance for the gun elevation motor in the turret; the motor may hit the battery as you rotate the turret.
Martin
