Join Date: Apr 2006
Thanked 175 Times in 172 Posts
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Re: Battery Bank Confusion
The lead in batteries is usually of varying alloys for varying purposes. Sometimes to make it harder and keep it in place, sometimes because it is from recycled sources that aren't as pure. Odyssey has a line of "TPPL" thin plate pure lead batteries that are supposed to be outstanding because of the thin pure lead plates. Interstate says one of your batteries is from pure lead. I don't know anything else about it, just that they make that claim on their web site. Interstate arguably makes a good battery, you might want to ask them if there's anything special enough to "need" to match the battery with another of the same type, versus just shopping for a battery.
A VHF, squelched on receive, won't draw a lot of power. An iPhone can't be more than what, an 1800mA battery? That lasts 8-10 hours at least, so it shouldn't need more than 3 amps for a full recharge daily. If you can get 48 hours between battery charges without cycling it more than 50%, I'd say stick with what you have. When it is used up, then move to a bigger battery bank if you need to. If you can't wait but need more power now, then by all means, buy now.
The numbers will give you an answer.