Most reacted threads

They really suck. They do not even know how to use test equipment properly. I sure like to see SunfunShits response in the video.

I just received my REPT 280Ah grade B from 18650Batterystore today, 12-29-2022, these are Black Friday special for only $100 ea, + $65 shpd (4 cells) to N.Cali. I test the Voltage on each cell, they are around 3.45V! it only took < 1hour to full charge each cell to 3.55V and <1A tail current, it...

I can see what are inside the battery cell, very interesting video.

Luckily no one got hurt.

I just start getting into the Solar system, my power requirement is only about 200Whr. I bought two used Sunpower 230W panels from local seller to play with first, the PIP-1012LV just arrived today. I am still waiting for the LiFePO4 90ah and DALY BMS to show up for me to build the battery pack...

I wonder why the QR codes are scratched off, I thought Big Battery would use brand new grade A batteries from REPT (as corrected by the notes in the video). 7:50 Time code.

The good news is that I just received the four LISHEN 280Ah today, I ordered them on the Nov 3rd, they arrived on Dec 13th and sit in the customs for 13day, FedEx picked them up on the Dec 26th and delivered to me on the Dec 30th which is not bad at all. The bad news is that the bottom of the...

Interesting reading from Sunpower. I was looking to learn about shading effect and bypass diode, I did not know about heating issue due to shading, I member one of the member shows the pictures of burnt up cell that melt the panel. Reverse Bias and Bypass Diodes When cells are put into reverse...

So I decided to take a chance on Battero Tech BT280 3.2V 280Ah LiFePO4 Cells for US$55/cell shipped from China. I place an order on Nov 22 2023, received them (4 cells) on Dec 31 2023. Top balance and ran the test as a 12.8V pack, I get 293Ah from it and have it installed in my system since...

Pretty good video about LiFePO4 Battery

https://www.youtube.com/channel/UC8oJL9T1z3Gqn6drDphZY6g

Shenzhen Qishou Technology (QSO) 304Ah

Very interesting video, especially using Victrom MPPT as the charge controller fed from the output of the alternator (215A)

Victron video: How to not blow up your Alternator when charging Lithium.

Very interesting result, I will do some experiment on my system.

I got this Xday 100W panel from Amazon Vine to test with my Bluetti EB70. I was surprised how well it works compared to my ACOPOWER 100W panel. I can get over 90W in typical day and 104W with edge cloud situation. I put wooden frame on it so I can stand it up easier. I have no idea how long it...

I ordered 4 of them. I saw the reviews on YouTube so I decide to check out the website, Calpha.com. I put one in the cart but did not check out, I also signed up to see if they have any deal for first time buyer, about an hour later I got and Email offering me $50 off for first order which I...

I hope we will see the follow-up from Battleborn.

Does any one here have any experience withh is brand from Amazon? I am trying to decide if I want to DIY or buy this one. Thanks.

https://www.washingtonexaminer.com/policy/economy/lazy-crane-operators-making-250-000-a-year-exacerbating-port-crisis-truckers-say

Very interesting video showing the inside of the burnout Victron 100/50 MPPT charge controller that the guy bought from EBAY for parts. Part 1: Part 2:

I did not know that Duracell makes battery storage for home, I stumble into Youtube video of the UK guy with this battery. https://www.duracellenergybank.com/

I have been looking at this EPEVER 8415AN (it is 80A) unit to find some review and to see if there is any issue with this model or not but I did not find much of anything about this model. Anyone here has this model? Any thing good or bad about it? I can get it for $310 that comes with MT50, USB...

Gov. Gavin Newsom signed a new law on Saturday that orders state regulators to ban the sale of new gas-powered equipment using small off-road engines, a broad category that includes generators, lawn equipment and pressure washers...

Shipping(Only for U.S. customers, including U.S. Middle East and West): 1). By FEDEX, UPS transportation (5-10working days),for U.S Country,including customs clearance, all the import tax fees, and delivery to the door. Any one try to order this one? Any damaged cells...

I bought this unit directly from MPP Solar Taiwan (peggy@mppsolar.com) instead of from USA rep because it is about $175 cheaper. I am having AC output unstable (run on batterty mode) issue at low load of <300W, the output jumps up and down and I can see the desk lamp flicker too, but if I add...

oops!

I thought they found the problem in the past due to faulty connector around 2019 and was suing Tesla, but here in 2021 Walmart still having panels catch on fire...

Very interesting video. I do not see any cells sorting, matching, or top balance being performed, I wish they will show that.