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As I have said- I’m a newbie in all ways to this. I saw a header that looked like a supplier title showing 18650? I now have pricing from Docan. I think that’s where I’m going. US warehouse. Fast ETA. Learning:).

Update on Bi-facials: I set up a pair of panels to rest again about 10am today. Took a picture of what I saw at 12:38 pm. 1338 watts From 2-445 watt panels???? That’s 40%+ over rating. Saw 1420 watts before I got out my phone. Crazy! It was 24f out. 24 degree tilt. About an hour before...

Yes, I plugged in the panel specs to the form and it was ok. Then I ran the high end extra output I had just gotten and it was still was ok. It looked like too many amps though so I called Midnight Solar and they affirmed it but said I should go from my 80 amp breaker to a 100amp or my charge...

Hi there! I am doing my final tests before locking in my system for the camp to be built this summer off grind. At 47 degrees latitude and cold with lots of snow, I decided to try Bi Facial panels. Maybe the snow reflection could bring in more watts the standard panels but I was told not to...

Hello, I too am facing the low temp charge care issue for winter here in upper Michigan. After many hours of research into options (new high cost low temp batteries are not in the budget and have charge limits), I finally came up with my answer for 24volts and one that would work for 48 as well...

Issue solved . What was wrong and done to correct it? Checked panel gain between both set ups. Within 7% so I did not believe it was panels. Did an amp check out of charge controller. Checked out ok. Decided to change out any copper clad aluminum wires. Found one and changed it. Got an...

I know very little of the 250 watt panels? I just got 445 Canadian Solar bi-facials for an off grid camp system this summer. I have run many spot tests of them at my shop and found up to over 670 watts from them! Wow- they can really put out. Maybe not worth the extra $ but factor in your...

Got a JK-B2a8s20p from Banggood coming. Shipping from Canada stock? Have not received it yet. Ordered a week ago. I stayed away from Aliexpress. I think you can find them on Alibaba also. Watched many reviews on YT and discovered it should be a good unit. The active balancing at 2a...

Hello fellow Yooper:). I built a solar box for my batteries, inverter, SCC and combiner box. All fits good. The battery box is insulated and heated. 24volts/300ah , much smaller then yours. After doing this for a friend and I , I thought I might risk it and started building an in house...

I am a newbie to this so I can easily be bashed but I wanted to share what I found out today. I had ordered 4- 445 watt panels for AltE. Bi Facial because I am in a cold snowy area at about 47 degrees latitude. I hooked up two panels today at my shop to my midnight solar classic 150 and a 24...

Ok, that I understand. It’s not an active balancer but allows BMS time to do its thing. I’m staying away from Daly but not sure that is good . Doncan sells a different BMS, I think it’s JBD type? Got to get its right:).

I got some coaching on over paneling from a few members. I’ll share. Boiling it down:::: Never exceed the VOC rating and you must include the temperature variable. (Often about .3% per degree C from 20C to say -20C would be 40x.3% or 12% more. Call the SCC manufacture and ask if it can...

Those are quality Your EG4 has a good rep:). Do you offer a BMS? I’m looking to get 280 to 300 ah at 24 volts

Yup. I’ll take better pics of the two boxes I have now so one can see the structure and heat pad stat install.

Hello to all! I’ve learn much from you all and am tuning in my system for spring build. I’ll give overview then ask my final few questions to finalize the system. 24 volt 300 ah lithium in heated box 1760 watt Bi facial 2s2p PV Midnite combiner Midnite Solar Classic 150 charge controller...

I found a crude way to get the info to you. I took screen shots and will attach.

Super good to hear! I will not have any MPPT communication needs I hope. Simple set and forget level of system:). I’m very happy to hear the JK has done well for you and feel much relieved for my needs. I just too balanced and strapped my 8s pack together. Tomorrow I plan to finish the...

Your engineering looks solid. My work is from being a building contractor for 35 years and an HVAC contractor for 33. Oh and I taught it (kept it basic and English units only for kids) for 28 years. I drag my knuckles a bit but I could follow your math. I did not use specific heat in...

you are right—-2s X 3p is about right for good volts. 250x6 is 1500watts so a call on that would help. Yup , to bad you did not get one size larger. Maybe get a small second SCC rather then wasting the watts you can get because your current controller may just throw the extra away:(. A...

Nice Batteries! Ok price. Im retired and need to save a bit of $. On my system. At the price of building materials I’ll need plenty to do the cabin part of my project. The only risk in building the batteries that I see is getting good cells. The US outlet is pricy for them but low risk...

So as to not have the miss understanding of another post. The watts used per day is .180 kWh. I listed it at 180 watts per day. Some thought it was per hour???? Very little energy if a good insulated box. I watched the temp in the box go from 44f to 55f when battery was being used . This...

Upon learning this I acquired pure copper wire to replace leads. No other aluminum in the install. Function and safety first:).

I have built my 8s 280ah EVE battery using a JK 8s20p BMS. It seams to be working well. The BMS came without a manual of any kind. I accessed Aliexpress to find the wiring info. Now I hear from Off Grid Garage video that the JK does not support parallel battery builds?????? So if I want...

Got it! Thank you. It makes perfect sense? I’m looking at adding 50% to compensate for bad winter times. Also tilting panels to near vertical during Dec and Jan so self cleaning of snow. I’m feeling better about my plan. Now to build design on my battery:). Yikes! Thanks again.

I may have found the info that explains the high output. Pulled up the data sheet on the Canadian 445 Bi-facial and it’s tested at 20c. If I read it right, the power increases .34% for every degree below that. I was at about -10c or 30 points below so adding 10% to the 30% optimal gain you...

First picture is of a single battery box with heater system in bottom. It holds the batter in the third picture. 8s. 280ah unit. The second picture is of a vertical type box for behind a door. It can hold 2-12volt 300ah manufactured batteries or as I discovered it can hold 2-8s 280ah...

Got the panel mount done. It all works good from vert to 65degrees. Had to add two torque tubes but all worked. Next is wait till the snow melts and take it to camp site for set up. It breaks down into 4 easy to handle and haul pieces. Will hold panels 36” min off ground. Hand crank...

I got the panels from AltEStore. I think they were $236. They sold out fast. I have seen the CS 390 at two places, and the Bluesun 460. I will have to check out Santan?

Ok, my system is: Victron Multiplus 24-3000-70 inverter Midnite Classic 150 SCC 4 Canadian Solar 445 bifacials Midnite Solar MNPV3. Combiner box Renogy 500 battery monitor 2 Jita 12vokt300ah lithium batteries or home built 8s. 280a battery with JK BMS 200amp Home made ground based tilt panel...

Good ideas. Yes, I have those things. In a few days I can get there to do these checks. Yes-a weak connection could blend off power fast. Thanks, will report on finds