diy solar

diy solar

Search results

  1. L

    Compact Car Alternator & PS Inverter

    Question: What is a safe continuous amperage draw from a compact car (2008 Mazda 3) alternator for use with a pure sine wave inverter? Background: I built a LiFePO4 24V portable solar generator. The battery is connected to a Growatt 24V3KVA. I use the AC Input to recharge the 24V battery when...
  2. L

    Startled by my Overkill BMS.

    I woke up to a series of notifications on my iPhone that one of my cells was over voltage….by 16 volts! I thought I had a severely runaway cell somehow and I was going to have an explosion. I ran to the garage to check and there was no signs of damage. I launched the app and found the cells...
  3. L

    Overkill Solar bluetooth issues?

    I’ve been running the 8s 100A since 2020 with great success on a battery used for backup power. I’ve been able to power consistent 2000w loads and even surges up to 4000w (~160A) for things like my clothes dryer at startup. It also charges comfortably at 60A for over an hour. My only complaint...
  4. L

    DIY…am I right?

    27,000 Amp Hours. Heck…why not? ? https://petapixel.com/2022/01/31/man-builds-massive-27000000mah-portable-power-bank/?fbclid=IwAR1etzL1sWb0pp_tREFrto4G11Pb4bn1wXdL36U1aAu35rgNCo9TwNsNBKA
  5. L

    New Ecoflow Delta Mini?

    Did anyone catch this new, smaller Ecoflow Delta? They claim 882Wh, 1400w continuous inverter, and 300w solar input. Looks like it retains much of the original Delta design, include the fast AC charging that I like. I was about to build my own portable generator with a 1500w pure sine wave but...
  6. L

    Any new or used batteries in Arizona?

    Hello! I have a family trip planned in December to Goodyear/Phoenix Arizona. Are there any LiFePo4 dealers - both new or used batteries in the area? I live in San Diego, CA and there isn’t much outside of Craigslist sales.
  7. L

    Any cool Battery Monitor/Info Display panels?

    As the title suggests, are there any cool battery/system monitors available in the market? So far, the “coolest” display seems to be the Renogy battery monitor. I have the Aili battery monitor on a couple of battery packs and they suffice. Are there any OLED displays like what’s on EcoFlow...
  8. L

    Would you risk this purchase? Used Winstons

    Hello, I came across a local OfferUp listing for used Winston 300ah cells. I don’t know anything more about them and I’m still waiting for a response from the seller. He’s selling them for $50….I’m not sure if that’s the price for each or the whole lot (I wish). I’ll ask more detailed...
  9. L

    Anyone using Rich Solar 24V 200W panels?

    I live in an HOA community that does not allow roof mount solar and requires pre-approval before any structures are built, so I’m designing a panel system I can easily deploy in the backyard, and put it away when my batteries are topped off. I’m almost ready to pull the trigger on the 24V 200W...
  10. L

    1 cell spike only when charging?

    I have used 72ah cells from eBay. I top charged each cell individually to 3.6V then put the 8 cells into series. I discharged all of them down to 24V and they all stayed pretty balanced (2.8-2.9V) all the way down. I began charging at 25A and cell 1 spiked to 3.67V which tripped the BMS single...
  11. L

    Starting my portable Growatt solar generator build.

    I finally purchased a bulk of the major components I need to (finally) get started with this project. I don’t have this all planned out yet but I will soon. For now here are the major parts: 8 used CALB LiFePO4 cells from eBay. - I inspected these since they didn’t come with full documentation...
  12. L

    “Oh, btw...Overkill Solar has an 8s BMS”

    I just watched @Will Prowse latest video for the DIY Titan Solar expansion pack and he threw an “oh by the way” at the very end and my jaw hit the floor. Overkill Solar has an 8S 120A continuous BMS!! From Will’s site...
  13. L

    Electrodacus SBMS0 or Chargery 8S?

    I’m really fascinated with the SBMS0. The interface alone would cut out about $150 in additional battery monitoring meters since it provides so much detail, including state of charge, and it looks to be super intuitive (unlike the Chargery) and easily customizable. From what I can tell, it uses...
  14. L

    Daly 200a BMS DANGEROUS?

    I came across a video with a user testing his Daly 4S 200A BMS for undervolt and overvolt protection. Ultimately, his tests weren’t cutting off the battery when a cell reaches 3.2V or 3.65V for the low and high cut off points. He mentions in the comments that the manufacturer responded. They...
  15. L

    Need an AC/DC Charger - ISDT BattGo T8?

    Building my first 24V LiFe battery is thrusting me into the world of power supplies, pack chargers, balancers, switching supplies, benchtop supplies....my head is spinning. So far my searches have turned up a limited selection of 24V LiFe specific chargers. The hard part is that they’re all...
  16. L

    Inverters with custom LVD?

    Victron LVD behind inveter? Bad idea. Relay behind inverter triggered by BMS? Bad idea. Relay as switch? Better, but not ideal. LOL every idea shot down (more lole Clarified) by one of Will’s videos ?. His recent video on Chargery part 2 mentions setting max absorption from the charger and a...
  17. L

    3000w inverter - narrowed down to 3.

    I’m looking to build a portable 24V solar generator for emergencies similar to the Titan. I’ll likely only be pulling 1800-2500w continuous for short household tasks but I’m thinking about going with a 3000w inverter just for the overhead. For example, my wife’s 2000w hair dryer pulls closer...
  18. L

    24v build - Daly 200A or Chargery 8t help me decide.

    I’m building a 24v portable solar generator for emergency use and I’m building my first LiFePo4 battery. I’m pairing a 3000w PS inverter but will likely only be drawing ~95A continuous for common home appliances one at a time for emergencies. I also only plan to charge at no more than 40A. I...
  19. L

    12 LiFePo4 cells - WWYD?

    I’m in the process of acquiring used cells and building my first lithium battery pack for a portable solar generator. The seller has 12 3.2V 65Ah cells. I’ve secured 8 so far and am contemplating if I should acquire the last 4. My initial intentions were to build a 24V system. To power up to...
  20. L

    New EcoFlow R600 - power 1200w on 600w inverter??

    Power 1200w devices on a 600w inverter??? Their marketing has me confused but intrigued. Every review and test I’ve seen shows you cannot exceed the designed load of an inverter, sometimes you can’t even approach the max rated continuous load. If you have a PS inverter rated for 1500w...
  21. L

    EcoFlow R600 1200w on 600w??

    Their marketing has me confused but intrigued. Every review and test I’ve seen shows you cannot exceed the designed load of an inverter, sometimes you can’t even approach the max rated continuous load. If you have a PS inverter rated for 1500w continuous...good luck running and sustaining that...
  22. L

    Buck and boost converters into MPPT controller

    So I’m trying to build something like the Titan generator (24v system) where I can recharge from Solar, AC, and 12v car sources for emergencies. I was thinking about an MPPT controller like the EPEVER 40A that can accept up to 100V and charge a 24V battery up to 40A. This might be a totally...
  23. L

    Quick and dirty generator build.

    Newbie here with experience building a small portable solar generator using a Bioenno 20AH 12v lifepo4 battery, mppt charge controller, and 400w pure sine inverter. I want to slowly build out a larger generator capable of running common high wattage home appliances for emergencies - not for...
Back
Top