Recent content by ERNWA

Thanks! Just wanted to be sure it was nothing too complicated.

How did you limit the current from the battery to the MPPT? I'm planning a 72v bank on a sailboat for a propulsion motor and a separate 12v bank for house loads. I'd like to have the solar panels charge the 72v bank and the 72v bank charge the 12v bank. I thought of having the 72v bank feed an...

jc1409: I'm glad someone else brought the AMP-L-START. I am planning a retrofit of a sailboat as well. I prefer to keep the it as simple as possible. My plan is for the alternator to charge the start battery and then use two dc to dc chargers in parallel to charge the LIFEPO house bank. To...

You are correct. I carelessly left out my plans for alternator protection. I was planning on using a victron argofet battery isolator so both the LFP and starter battery will be receiving charge from the alternator. I would also consider doing as you suggest with the DC-DC charger pending...

I am planning a retrofit of a sailboat as well. I prefer to keep the it as simple as possible. All charging systems (alternator, MPPT, and shore power) should be setup to charge the house LIFEPO batteries. This will take advantage of their efficiency and rapid charge rates. To ensure the...

Then by this reasoning it would be safe if I had a 24v alternator and connected it to an MPPT charge controller for a 12v system? Just curious as I am thinking about my build. Thanks in advance.

Any one consider getting a three stage external voltage regulator from the alternator directly to the Lifepo4s? Then a small dc-dc to top off the starting battery. This would maximize the amps from the alternator to the battery. A stand alone MPPT for the house battery would also be needed. Adds...

Good morning all, I'm in the planning phase of refitting a sailboat with an all electric system to replace the Diesel engine. I plan on building 3 - 48v/150ah LFP battery banks for a total 450ah. I'm looking for recommendations of charging methods that are reasonably priced. Ideally I need a...

Not that this is the charger that fried his 48v 50ah Smart Renogy battery a week ago.

Wow. I didn't notice the shipping costs. I'm sure I can find an alternative with a similar price range. Thanks for the input!

12/24v thermo switch with controllable on/off 0-100 degrees C. $16.40 12v Heating Pad 40-140 degrees F. $12.99 Heating pad defaults to 40 degrees F when it turns on. You can manually adjust it much higher. This is what I plan to use along with good insulation. Seems a much cheaper solution...