I own a coachman Amara (2007) fitted with a 110 amp battery, is it a safe option to put another 110amp battery in paralel to this and link them together? i'm worried about the on-board charger
We camp mostly without electric and even with a brand new 110 Amp Battery last year i'm struggling
hi we r in the same boat but i fitted a solar pannel to the roof i made the brackets so i can take down the pannel through the sky light and tilt it towards the sun have not tryed it out fully yet but should help i bought a 80w of ebay paid £169 for it with charge controller so alot cheaper than some others which r 80w and cost round £400 ish hope this helps by the way what r u running to make the battery flat and how long r u away thanks
sorry i forgot to say my batts are 100a gels as i am a ups installer and my panels cost £200 for 4x 20 watters easy to bolt together and small enough to carry in an holdall also i have just installed 4x 38a yuasa's in a friends all in parallel
On ebay there are dual battery charge controllers - when not on hookup I take a second battery in the car that on site is used for all of the "other" stuff - charging mobiles ipods etc leaving the master for the pump lights etc.
From playing with off grid power I have found that even batteries of the same make and model charge at differing rates and therefore require differential charging or charging in sequence. This is one of the problems that has haunted the electric vehicle world for years and in now only slowly being slowly overcome with quite complex computer controlled monitoring and charging systems. To get the best out of both batteries I would suggest charging them separately with a decent charger, or if using two batteries with solar using a reputable regulator that will provide the most suitable charge to each battery. In the ideal world each cell would be monitored but that isn't going to be happening in the leisure industry unless we get a radical shift from the existing technology of using slightly modified car batteries.
A nice bank of Lithium-ion cells with a specialised charging unit could make a massive difference to caravanning and the use of motorhomes in the future.
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Topic: 2 Batteries ?
