Sorry folks but you are now talking about an unrelated charge requirement.
The OP posted up about charging his auxiliary battery, which happens to be under the bonnet of his Toyota. You are now talking about camping ( house ) battery charging. How does this have anything to do with the OP's post?
If you match the battery to the requirements, and in this case, an Optima Yellowtop is by far the superior auxiliary battery, then even if you fitted a 40 amp DC/DC device, the LOW VOLTAGE Toyota alternator will still recharge the battery far quicker.
If you want to charge house batteries in a camper trailer or a caravan, then the best DC/DC devices come from Sterling and you can tailor the DC/DC device to suit your needs. From their new Wildside (19.5A ) all the way up to their 180 amp Battery to Battery charges.
Look outside the square and you will find far better gear, giving better results.
The OP posted up about charging his auxiliary battery, which happens to be under the bonnet of his Toyota. You are now talking about camping ( house ) battery charging. How does this have anything to do with the OP's post?
If you match the battery to the requirements, and in this case, an Optima Yellowtop is by far the superior auxiliary battery, then even if you fitted a 40 amp DC/DC device, the LOW VOLTAGE Toyota alternator will still recharge the battery far quicker.
If you want to charge house batteries in a camper trailer or a caravan, then the best DC/DC devices come from Sterling and you can tailor the DC/DC device to suit your needs. From their new Wildside (19.5A ) all the way up to their 180 amp Battery to Battery charges.
Look outside the square and you will find far better gear, giving better results.
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