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yes, two lifepos in parallel as one bank, the lifepos hold the voltage and in case they switch off the small AGMs take over. Simpler to fit than a surge protector which needs to be very close to the alternator coil.

Hi Michael, I have my lifepos known in operation this season with the 2x 20Ah AGMs in parallel and this is working extremely well (no extra starting batteries). Motoring for two days in a row and the batteries never switched off. I also never got them above 13.6 V as well. Since I set the...

10 A with the HT Yamahas

I am based close to Berlin, where do you build?

Id di some more checking and experimenting on it. The output of the outboards is perfectly suitable for charging the Lifepos (it is a simple charging coil anyway) and it will charge with 10 A per outboard. The solar is setup that the lifepos are normally only charged to 50% that there is plenty...

Thank you!

Can you recommend one?

it is a 38 foot sailing catamaran with two outboards the outboards might help charging, there is otherwise 400W peak solar on the boat. The question is whether thereis a riskk either to batteries or outboard charging sytems in the setup since there is no additional srter battery. I am...

Voltage vs capacity

I plant to use the lifepo house battery (2 x 12 V 280 Ah in parallel,( https://diysolarforum.com/threads/waterproof-case-for-4-280ah-eve-or-lishen-cells.17740/ ) ) in combination with a 10 hp Yamaha high thrust outboard, for charging the battery and for starting the outboard. Is there any...

look at Liontron

Loaded with the cells

Coosa 6,35 mm, upper rim 20 mm strips, fibreglassed on outside, then painted with 2 pack polyurethane, interior is painted with white epoxy primer

Getting there, now the cells are missing

about EUR 12-18

Thermo TECH Polyester Heizfolie selbstklebend 12 V/DC, 12 V/AC 36 W Schutzart IPX4 (L x B) 320 mm x 137 mm

I need to make to make it waterproof because the batteries are stored on my cat in boxes on deck which can be subject to water, spray and the environment. They are going as a replacement to the AGMs. I am also curious about any heat generation, the BMS is supposed to shut off when too hot, but...

Coosa, fibreglass and epoxy composites

Design and execution of a waterproof battery box for 4 280Ah cells, BMS and thermostat and heating pad under the cells are included. Fuse is on top of the perspex cover for easy access. Any comments are welcome. Now it is waiting for the battery cells.