Recent content by rio

Those are the real heroes!

I tried with mine to keep it over 50%, but wasn't always disciplined enough and a few times got far below. But, the percentage displayed in the stock gauge is based on voltage, not on true SoC, so it's kinda meaningless to begin with. 2 years in, I was only getting about 20 minutes per charge...

@Jakeman that's great! Got pictures? I'm a bit confused about the monitor initially showing low charge. This monitor has no way to know state of charge if it's not calibrated. Usually you would have to fully charge the batteries first, then set the monitor to 100%. Then after that the monitor...

My 2 cents on the whole charging thing. I've continued to use the original Delta-Q charger with my converted system and at this point I see no reason to get a different charger. Given that cutting my entire 1 acre lawn uses only about 35Ah, I can easily maintain my SoC very comfortably between...

I think most of us joined just for this thread also! Double-check that these batteries will fit (they should). You might need new connecting cables for the battery terminals and series connections if the Ryobi ones don't work with the terminal post geometry of the new batteries. Hopefully...

Yeah good point. Yes, fuse is on main positive lead. I would also check that all the lug nuts are tightened. I can't imagine how the relay would suddenly go bad. You said you drilled through the panel without removing it. A metal shaving could be creating a short somewhere. Or like USJ...

58.8 V? That would make the average cell voltage 3.675, which is no good. What are the voltages according to the overkill app? Hopefully this is a typo or you have a very bad multimeter. Can you share a screenshot of the app? Are you confident that you installed all the balance leads correctly...

@ryobilifepo4user, i agree with the others that your batteries are most likely not charged. How long did your charge each battery for? With a 5 amp 12V charger, it would take 20 hours per battery to go from empty to full. Definitely not a good charger for your setup.

Sorry to hear. Regarding your first question, it could be a number of things. For starters, I would check that the overall series voltage of the batteries is what it should be (mid 50's, or up to 58V when fully charged), and continuity test on the main fuse. Regarding your second question, it...

Cool, thanks for sharing! I emailed the guy and pointed him to this thread ?

Ah, makes sense. I replaced the only 2 bus bars affected. I'll seal the entrance and keep an eye on things. Thanks!

Opened my box back up to inspect everything and found a couple strange things. My box is not fully enclosed; there is an opening of about 10 sq in. that the power cables go through. Plenty large for stuff to get in, for sure. I expected to find some grass clippings, but not this: I'm not...

@Nizadar Good luck with your conversion. Regarding your first two questions, I'm not sure what is the correct protocol when top-balancing pre-fabricated batteries vs individual cells but I assume it's the same as you describe. You will probably get more responses asking those specific questions...

Thanks for the tip. So you don't think hitting the original torque spec using a torque wrench is sufficient? I suppose that might make it slightly under-torqued on the threads which I thought would be a safe bet.

Not Not me, should have thought of that. Most lock nuts are stainless steel, which worry me might significantly reduce conductivity between posts and bus bars. Found these aluminum ones, a bit pricy but might just get them...