One way to join 12 volt 40 amp wires is with a wire nut cap. The wires are twisted together and then a protective cap is placed over them to ensure they stay joined.
Yes, you can.
20 amp on a 12 volt system
No. If you connect two 12 volt batteries in series(positive to negative) to make 24 volts, you will have 100 amp hours. If you connect two 12 volt batteries in parallel(pos to pos, neg to neg) you will stay at 12 volts but have 200 amp hours
A 1-amp adaptor can not be used for equipment that draws more than 1 amp. It is not clear from the question which part of your system is 12 v and which is 20 v.
Volts * Amps = Watts 12 Volt * 2 amp = 24 Watts
Yes if it is a 12 volt DC bulb.
12 volt 10 amp charger is what you need.
join two 6 vault battaries two make 12 vaults
It will be a 12 volt battery.
A .6 amp charger is a trickle charger. It would take days to charge a dead 12 volt battery with this charger. You need a 10 amp charger which will charge it in a couple of hours.
The amp hours capacity of a battery remains the same whether it is connected to a 12-volt DC load or a 120-volt AC inverter. So, the battery would still have 100 amp hours regardless of the inverter voltage.
When you join two 12-volt wires together, the voltage remains 12 volts, as voltage in parallel connections does not increase. If the wires are connected in series, the total voltage would double to 24 volts. However, if both wires are connected to the same power source correctly, they will function normally without any issues. It's important to ensure that the wires are connected properly to avoid short circuits or overloads.