Ok - here's some skinny ----
My buddy is a registered Professional Engineer (Electrical) and is a regional power system expert. I asked him about these and this is what he sent me:
The dry cell batteries do not offer the high discharge/recharge capabilities that a typical wet cell battery does. In other words, yes the battery has the ability to pump out high amounts of current, but when you recharge the battery you have to be careful not to overheat it or it will dry out. Technically, a dry cell battery is a paste battery. Moisture is needed in order for the electrons to flow and the chemical reactions to occur. If you overheat the battery during discharge or recharge, you will decrease the amount of moisture in the battery and eventually it will fail. I would not be surprised if these batteries were originally designed for a telephone pbx room. The batteries would smooth out the inherent inverter ripple on DC voltage and when the AC power failed the batteries would kick in to keep things working.
I checked out the Dynasty web site. C&D Technologies Dynasty® Division
C&D Technologies, Inc. designs, manufactures and markets Dynasty® brand batteries for standby power applications - in telecommunication, uninterruptible power systems (UPS), broadband, CATV and mobility traction applications.
I was correct in my assumption, the batteries are telecommunication type batteries. Very small amount of charge/discharge cycle rate. The mobility traction application, ie. electric scooters/carts, is a low discharge rate usage. Electric scooters typically don't require large current draw except for the first partial second as the motor comes up to speed, then the energy requirement drops down. The electric scooter market for safety reasons uses dry or gell cell technology to protect the operator in case of tip over and when the cart is placed in the back of vehicles for transport. Also, the airline industry prohibits the transportation of electric carts unless the batteries are designated as spill proof / leak free and have a DOT FAA sticker on them.
If the batteries were going to be used for lights/appliances in a camper, I see no reason they would not be OK. I don't expect the application in lieu of a vehicle starting battery would work for very long. Remember, I high discharge and recharge currents will kill these batteries in short order due to heating. Application under the hood of a vehicle will overheat the battery and lead to premature failure.
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