diy solar

diy solar

Search results

  1. M

    Enphase s280 vs Iq7

    It seems I can find used s280's for a little less than half the price of iq7. Im using them with older 250w satan solar panels. My thought is, this should be ok, as these were probably the same units that they were designed for back 10 years ago. I have 20 panels, so the price difference is...
  2. M

    No crystals in mono crystalline??

    I always thought monocrystalines looked a certain way. But then I'm getting these lgs installed. they look good, I just got so used to looking at a certain type...
  3. M

    can i recharge a 3s pack from vehicle with a separate port bms?

    pardon my ignorance, if I wanted to build a 3s with 3.7v nominal batteries, my total nominal would be 11.1v. if I tried to recharge these from a car, it would be fed around 14v. most non programmable bms cut the cells at 4.25v, which would be 13v. im curious if I can build a small pack with a...
  4. M

    Inverter chargers, battery options other than SLA/AGM

    I don't know if there is a perfect sub forum for this question. I have an older tripplite 1250APS inverter charger. Its a pure sine wave unit. It works perfectly fine with flooded lead acid batteries, but is it worth it, or even possible to switch over to Iifepo4's with a BMS. Im concerned that...
  5. M

    Help with bms circuit

    I am playing around with these hoverboard ebike modules. I can't seem to figure out what these two wires are. These are from swagtron 36v fire resistant packs. They're in a 2p10s configuration. These pics are from their filings, but match what I have. Any ideas? The circuit board shows the...
  6. M

    recommend a 6S LTO BMS?

    I got one of those 6S BMW LTO starter batteries from Battery Hookups. Other than its oddly small power density (10ah) it looks like it could be a good solar battery for an off grid ham radio repeater, or even as a vehicle jump pack. as far as a BMS goes, Im thinking that in jump pack mode, id...
  7. M

    How to mount solar panels?

    just walk me through it. Building solar gazebo style. I hear uni strut? I'd like something locally avaliable if possible. (Like hd or lowes locally)
  8. M

    SPIM08HP pouch batteries- what are they?

    I've ordered a bunch of these. These are listed as: SPIM08HP 3.7v 8ah 200a I've heard they are from an old e-bus prototype, and I've seen quite a few vids of people testing them with good outcome. My question is, what are they, exactly? Here's my assumption: Their not the traditional lithium...
  9. M

    Is it ok to have multiple BMS's in series?

    Is it ok to have multiple BMS's in series? here's what I want to do : I have 14 NMC packs- but I have a 24V system. Instead of a 7s2p setup, I was thinking about whether its better to build 2 7s setups with 2 BMS's., and thus parallel them together. I also wanted to add some other storage...
  10. M

    Leaning towards 18650's instead of other options

    Im leaning toward my first Lithium build to move away from lead acid. Still very new to this, but trying to learn. Originally I was considering biting the bullet and getting LTO's- But the cost is still very high. My next considerations was prismatic cells- still more expensive than 18650's per...
  11. M

    entertainment for when the power goes out?

    From personal experience... when the grid goes down (even for a small area) I loose internet. The power backup system kicks online, but doesn't help when the next section of cabling doesnt have power. That said, what do you do for entertainment? Card games? Watch a movie? If you watch movies...
  12. M

    18650 or something else?

    Is it still worthwhile to build 18650 packs? At 10-20c for used cells, do I go that route? Or do I just get some of these prismatic cells which are 120ah for 50? I'm still new to all this!
  13. M

    MPP Solar LV2424- configuration using 270W panels?

    Anyone familiar with this unit, I could use some guidance. I ordered these panels from santan: (yes, the snail trails one!) and I want to use this with a LV2424. Rated Power: 250W Open circuit voltage (VOC): 37.6 V Max power voltage (VMP): 30.3 V Short circuit current (ISC): 8.85 A Max power...
Back
Top