Hope someone can help me here, it's not very bushcrafty but it does enable me to live an easier life:-)
I have a second 12v battery which i use in my van, I use this with an small inverter and croc clips to power a laptop,charge phones etc and as as backup should i find the primary flat.
Now at the moment i just charge this up when i have the chance and am near a ac socket, not ideal. What i would like to do is have this connected in parallel so it charges from the alternator and perhaps have a cut off/isolator switch also to prevent me draining the primary bat and waking up in the **** end of nowhere unable to start the vehicle
The primary battery is in the rear of the van under a panel so cabling should be pretty easy (89 toyota hiace super custom for those wondering)
I may also install a solar panel to keep things topped up - if anyone has any options on what's good/bad/ace?
any thoughts on how i can achieve this safely and reliably (cheap would be nice :-)
Thanks in advance folks