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Outdoor & Recreation
Camping
DEEP CYCLE BATTERIES and BUSH POWER
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<blockquote data-quote="condor22" data-source="post: 115130" data-attributes="member: 1932"><p>I have not suggested ever connecting an auxiliary battery in parallel with the starting battery. I personally would never do this.</p><p></p><p>What I have eluded to and will better explain in my future examples is;</p><p></p><p>Connect the input of 12V to 12V smart charger which is IGN controlled to the vehicle battery (use a relay, solenoid or a smart charger with sensor capability to give IGN control). Then the output of the smart charger to the AUX battery.</p><p></p><p>All properly circuit protected.</p><p></p><p>The alternator charges the primary battery when engine on, which in turn powers the smart charger which in turn charges the aux battery. The charger either disconnects when engine is off or in the sensor type when the voltage drops to a point where it is still safe to start the engine.</p><p></p><p>You are correct re the not fully charging off an alternator, that's why I advocate the smart charger option.</p><p></p><p>The other benefit is you use a CCA battery to start the car and a deep cycle for the fridge etc. So dissimilar batteries are acceptable.</p></blockquote><p></p>
[QUOTE="condor22, post: 115130, member: 1932"] I have not suggested ever connecting an auxiliary battery in parallel with the starting battery. I personally would never do this. What I have eluded to and will better explain in my future examples is; Connect the input of 12V to 12V smart charger which is IGN controlled to the vehicle battery (use a relay, solenoid or a smart charger with sensor capability to give IGN control). Then the output of the smart charger to the AUX battery. All properly circuit protected. The alternator charges the primary battery when engine on, which in turn powers the smart charger which in turn charges the aux battery. The charger either disconnects when engine is off or in the sensor type when the voltage drops to a point where it is still safe to start the engine. You are correct re the not fully charging off an alternator, that's why I advocate the smart charger option. The other benefit is you use a CCA battery to start the car and a deep cycle for the fridge etc. So dissimilar batteries are acceptable. [/QUOTE]
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Outdoor & Recreation
Camping
DEEP CYCLE BATTERIES and BUSH POWER
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