Recent content by kite

yea cool, it would be cleaner than what I did. I hope you find a good switch. I looked for a suitable switch/relay and didn't easily find one I wanted to trust indefinitely. Looks like this is what I considered:

yes, I think so. I don't want to charge house battery daily (I drive it for that). I want to charge it relatively quickly the one or two times I discharge it accidentally. I solved this with a couple connectors a cheap switch that allow me to use an already installed 30A charger. Is adding a...

I had similar requirements as the OP for my van build. I wanted the ability to charge my starter battery from house LFP battery. I accomplished this with plugs that allow me to reverse the input and output of the dc-dc charger. This won't give you trickle charge capabilities but it will save...

I don't know, but I am able to use Bluetooth and the touch screen simultaneously with the Bluetooth connected to UART and screen to RS485 port. Bluetooth updates rate is higher than the screen (for instance, current reading on my phone will do a better job of following quick changes in load than...

switch installed in a protected location so it doesn't get accidentally pressed. It all works as expected!

Works like a charm. manually turning on the victron orion is super simple. leave engine detection on with the jumper in (it has to be in normal operation). supply >3V to the H-pin (but with jumper in this is either pin) and it turns on. So I just need to add a switched wire from my 12V bus...

Yeah I hear you. Just trying to understand what can. The top cover peeled up and stuck back down surprisingly easy.

well look at that! another QR code scratched off under the black cover. @bobh5597815 what do you mean "reprocessed"? does this just mean "used" or is there actually some sort of reconditioning procedure that resellers/manufacturers do to bring old cells closer to original spec? And are you...

So far so good on these ETC cells. All were ~ 3.2V with 3mV delta except for one that was 8mV lower (the highest capacity tested cell of the bunch pre-shipping). They were packaged well and looked good on arrival. Only small things noticed are two small sections of blue plastic wrapping that...

See the thread below for two examples of 280Ah 12v packs built in group 27/31 battery boxes. https://diysolarforum.com/threads/280ah-4s-compressed-with-heaters-in-a-27-series-battery-box.26901/#post-335391

Yeah it's a little bit of a risk. I got these covers that almost completely cover the live portion of the post. They definitely protect from anything bumping against the top of the post which is the most likely scenario.

hey @JeepDaddy thanks for making this post. I was torn between building a plywood box, buying something bigger, or re-using a plastic battery box from one of the group 31 lead acids I'm replacing in my van. Your post gave me confidence I could make a 4s 280ah battery fit in the box (and space) I...

In my case, starter battery is a flooded lead acid. 150A alternator 280Ah 12V lithium house battery So the options being suggested are: 1) momentary boost switch that parallels house and starter around DC DC charger pros: simple, ish cons: uncontrolled current. initial current spike...

Thanks for the responses. Yeah, wouldn't that be nice! To clarify, this is for a daily driver beach van + camper. I do not need a trickle charger/maintainer. The goal here is to be able to start the engine if I accidentally kill the starter battery at some remote location (say, 50 miles out...

Question: Is it possible to use a manual transfer switch or relay to swap the input & output of a DC - DC charger, in order to charge a starter battery from a house battery? sketch attached that I hope shows what I mean This could be accomplished with: - a switch like this (most are AC...