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Working pretty good so far. I’m taking a solar installer course, and did an analysis on the bike panels. Used my work drive as the baseline. Anything look weird? We’ll see if I reach this estimate for the summer months. Skeptical..

Fixed this issue shortly after, but forgot to post the answer here. It was a programmable load causing problems. Before spending days running in circles over one component, I should have checked the whole system for other devices causing interference. After switching to a different load...

Hey, thanks all for the advice on this - sounds like building a panel is more than just slapping a bunch of cells together. Tons of stuff needed like bypass diodes, the glass protector, and the delicate soldering mentioned, all to get a sub-par panel (with my craftsmanship at least). I wanted...

Parts arrived - Here’s the new wiring diagram for the build this weekend. Roast it, before I roast myself. At first I was planning to run the panels in series, but the open circuit voltage of these Renogy 10w panels is 21.6v, meaning 3 of them in series is 64.8v (the inverter cuts off over...

Hi all, I have a JK BMS on a 14s pack leaf pack. The cells all populate correctly on the app, but once the pack is under any load over 5 amps one cell will show crazy voltages, seemingly at random. Using a multimeter I have verified that all cells stay balanced while discharging. I am using a...

@GXMnow - I can split the pack exactly in half, since it’s 70 cells with sets of 2 paralleled. However I would be splitting one of the paralleled sets in the middle. Seems fine to me, knowing nuthin’. Mind checking the drawing in item #3 again, the green text specifically. OrionBMS2 actively...

Hey everyone, I have an ebike that I'm going to build some new cargo boxes for. I was weighing the idea of putting some PV panels on the box lids. There are some small 60v mppt boost units that have decent reviews and documentation, an important note is their minimum input voltage starts at...

Winston 20kwh pack out of an electric vehicle. 27 cells. Great for a solar pack, or a short-range EV. Selling because I did a pack upgrade. Worth over $5400USD new, but I can’t verify the exact capacity, so price reflects this. Runs good, cells stay even. New cells here. I can chuck in 4...

Understood, I can’t find any with boost and buck features, an inverter that can do both would be custom, or impossible? Yes, this could be less than 4amps max, still allegedly 10kWh per week. While I’m asking the ultra-dumb questions… I can find 60vdc to 120vdc dc/dc converters. Has anyone...

Normally charged through a public or home charging station, J1772 plug, 5kw onboard charger that unfortunately wouldn't like the low amps. Here are some options I found for the 500w panels → 115VDC pack problem. Thoughts? low end...

Hey everyone, thanks for the replies. Here are some numbers on the load and PV stats. I made a spreadsheet from my BMS data and some solar calculators: Notes from that sheet: Weekly commute is 42km(26mi) driving across town. 133amps avg, 50km/hr(31mph) = 15.40kWh avg Weekly solar panel...

Hey guys, I’ve restored an old van, EV swapped it, and added a 500w array. The solar is for interior accessories on a 12v battery. (stove, heater, lights, lava lamp, weekend camping stuff) 5x 100w panels. Working great so far. The HV battery that propels this van is 115v when fully charged...

Hey, thanks for the reply. I should reiterate that the BMS screenshots are NOT the actual cell voltages. No cells are even close to 4.4v, or 3.6v when checking with a multimeter. Had the same idea to ditch the terminal block. The BMS cell taps (red wires) go directly to the Leaf cells. Cells...

Price drop to $1000CAD

Thanks for the info, I will lower the Elcon charging curve to ~115v. I just got the basically the same offer from Doncan and Qishou. They both offered the aluminum block terminals. The same double-lug that time2roll posted above. Anyone have any last minute words of wisdom?

Hi everyone, Longtime lurker - finally doing a system upgrade. Hoping for a math/brain check. I have a 32s winston260ah pack that I am replacing. 102v nominal. I’m looking at purchasing 66pcs 280ah EVE cells and running them in 33s2p configuration, with a BMS capable of handling paralleled...