Three 30 amp batteries v one 90 amp battery
Submitted: Monday, Jun 13, 2022 at 10:01
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Member - Outback Gazz
G'day All
A good friend of
mine recently purchased an old Hino bus that was professionally converted into a motorhome quite a few years ago. It has 4 large solar panels on the roof (watts unknown) and has three 30 amp AGM batteries wired in parallel. The three 30 amp batteries are standard full size not small ones.
Would anyone know why 3 x 30 amp hr batteries would have been used instead of say of 1 x 90 amp hr battery and would there be any reason he couldn't just put in 1 x 120 amp hr battery ?
Cheers
Gazz
Reply By: Dean K3 - Friday, Jun 17, 2022 at 18:08
Friday, Jun 17, 2022 at 18:08
Gazz,
working on basis of parallel wiring I'm presuming its a 12 volt system which is kind of odd for a old style vehicle unless its a 24/12 volt system ie 24 v start 12 v operate.
weight is one thought but space is also a option but with no picture3s to tell the story gets bit hard to give a semi techncial thought.
I would however investigate the solar panel voltages and watts hopefully a sticker still attached or readable on underneath of the panel.
id go with others suggestions of LIfepo4 as replacements but have a suitable BCDC charger fitted ideally batteries with intern BMS fitted
I do recall the days at motorola when techs had to lift manully a number of 200ah batteries into the comms room top of the QV1 building in
Perth for WA police upgrade 200ah are PITA to move ! also to transport one very heavily (suspect overloadfd) Falcon ute to move them
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