Recent content by eemarty

That tester is called a DL24P. I like it. I got mine for $30 from aliexpress, But you can also find them for more than that on amazon or ebay. Basically it was the gateway drug for an Aliexpress account for me.

This is a great price. I haven't tested the Eco Worthy, but they have decent reviews. To get the price just find the item on ebay: ECO-WORTHY 12V 100Ah Lithium Iron Phosphate LiFePO4 Battery (2 Pack 100ah）For RV and use the coupon code which showed up automatically for me: SPRINGSAVE20

Interesting. This same battery is listed in a few places on amazon with different reviews. Search DJLBERMPW 12V 100Ah on amazon. The one with 196 reviews gets an A from Fakespot, The one with 79 Reviews gets a B and the one with 24 reviews gets an F. It's strange that they don't tell you how...

Couldn't you say that about anything you buy? Some brands have better quality control that others. The amazon reviews seem to do a good job of exposing the bad brands. I actually bought two of these last week from different sellers and both tested good. I have purchased and tested 6 brands of...

Back at $168 but only 5 in stock: https://www.amazon.com/DJLBERMPW-Upgraded-Lifespan-Trolling-Off-Grid/dp/B0CG1LQVLY

Both batteries exceeded their capacity tests at 104Ah and 103Ah. I've been charging one of them at 60A for the last 30min and that seems to be fine with no warming anywhere on the case. Everything looks great to me with these. No low temp charging protection which may be an issue for some, but...

I ordered 2 of these from amazon on Monday and they arrived yesterday. They look great and were packed well. There's an extra set of terminal bolts included. The batteries weigh in at 22lbs each and resting voltage was 13.25V on each one. Capacity test is underway. The price is up to $184.99...

Here's the youtube review/teardown.

Stunning Cyber Monday deal on this 12V 100AH battery right now at $167.99! ($0.127 per Wh) The is the lowest price I've ever seen so pull the trigger if you are in the market for one of these batteries. Despite the strange name this battery seems to perform well. See the tests in this thread and...

OK So here's the final ending of this saga. The seller is laughing at me and keeps saying "The corresponding price has a corresponding value." Which I think is Chinese for "you get what you pay for". Check the recent reviews of this battery which weren't posted when I ordered it. There are 7 new...

Interesting experiment involving blowing stuff up using a bank of 100 lead acid car batteries! Currents are in the tens of thousands of Amps. He actually tests a standard home circuit breaker at 26min and it performs surprisingly well.

My 100Ah Ogreen battery arrived yesterday it looks nice and was packed well. It weighs 13.1lbs. For some reason they didn't use aliexpress tracking system at all they just sent me a message in aliexpress with a fedex label that had the tracking number on it for the USA leg of the trip. I did two...

Yeah, I'm not feeling great about buying one of these from "Ogreen Lifepo4 cell Store". I purchased it on August 29th and there is still no tracking information on aliexpress. The seller messaged me and said "Dear friend, your parcel is expected to arrive at Hong Kong on the 9.25" but it's a...

I've heard the recommendations but I want to see the studies that quantify how much degradation there is.

That Renogy DCDC converter with MPPT seems like it's designed for what you are doing, but all the specs I read say the solar input is limited to 25V which is pretty low unless you are using several of those 100W "12V" panels you find on amazon in parallel. Where did you see that it's rated at...