Dijo
New Member
- Joined
- Jul 6, 2021
- Messages
- 27
Allright ! seems ok to charge only 30A as it won't be my main charge system.. is the Renogy DCC50S 12V 50A, which allow you to pull 50A is not better than the Victron ?Not quite. You *always* need a regulator of some kind for an alternator. The alternator simply will not work without one. But, you could use a cheap alternator with an internal regulator, or a cheaper external alternator. You wouldn't need an expensive regulator that is safe for Lithium. The alternator would be connected to the Lead Acid starting battery as if it were the only battery you had. Then the DC-DC charger would charge the Lifepo4 from the Lead Acid battery. So the Lithium battery is isolated both from the other battery and from the alternator.
This is a common and recommended setup for a number of reasons. The downside is that you will only be able to charge your Lithium Battery at the rating of the DC-DC charger - typically 30A.
Something i don't fully understand with the renogy is : could be use as mptt and DCDC charger at the same time or it's juste a DCDC charger with MPTT integrated