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Renogy DC to DC direct from second alternator?

8bit-ash

New Member
Joined
Nov 9, 2020
Messages
5
Hi All,

Sorry if this is a silly question but I have been running my new DIY 560ah Lifepo4 battery bank on my houseboat for a couple of weeks now. Solar has been seeing me good but the UK winter is upon us and I am going to need some back up pretty soon. I have a Renogy DC to DC 40 charger still in the box and was wondering if it was possible to connect this direct to my 150a secondary alternator or whether I need to run a lead acid in between the two? Currently the 2nd alternator isn't being used.

Cheers
 
You should be able to direct wire it. I have a bench top setup using a regular DC power supply connected to the Renogy 40a dc to dc charger. And it is working great for charging and testing my lifepo4 batteries.
 
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