Recent content by mysolarrv

Here's another reason, so I can enter the capacity values into the app so it can give me better SOC estimates. So I deviated somewhat from my original plan of a 2P4S configuration. The battery bank now has two 4S batteries wired in parallel. Each battery has a BMS (Overkill 120A BMS) and...

I guess this is just a small rant... Kind of seems a bit ironic; while chatting with a vendor the other day and they said this: So how do I know they are not selling used or lower capacities just because they say they are an honest seller?!? It seems like every vendor advertises 'New' and...

I was looking online tonight and found a 200AH battery with 180-190AH Capacity. What?!?! Which totally makes no sense. It is clearly advertised as a 200AH battery, but the specs tell a different story. I wonder if this is becoming a trend. B200AH Product parameters: Product Name: Lithium...

Well, I finally ran capacity tests on each of the 8 cells using a DL24P tester. Test specifications: 16.0A CC load with a range of 3.60V to 2.70V Here are my results: Cell #1: 155 AH Cell #2: 159 AH Cell #3: 158 AH Cell #4: 156 AH Cell #5: 153 AH Cell #6: 153 AH Cell #7: 150 AH Cell #8: 163 AH...

Okay, I did find a DC microwave here --> DC Microwave , but it looks like they are no longer available (sorry about that). So probably best to match a proper sized pure sine wave inverter with an existing AC microwave oven. A modified sine wave inverter technically will work, but will probably...

Yeah, I wondered about that myself. It would have to hook up like a large inverter with heavy gauge wires. There is no way you could run it off of a cigarette lighter plug. :D

I swear I saw a couple of models when I did a Google search for microwave ovens for long haul truckers, but maybe I was mistaken. For my camper, the microwave is built into the cabinet above the stove, so it would be a major pain-in-the-neck to try to swap microwaves from AC to DC (if they...

I'm a little embarrassed to admit this, but I didn't realize aliexpress was just an online "discount outlet". Lesson learned. I did read through many of the comments for the seller and almost all were favorable, go figure. And soon after I received my cells I opened a dispute with the seller...

Yeah, I get your point. It's not like the AliExpress seller is going to offer any sort of warranty replacement if the cells are way below their advertised capacity. Which I guess brings up another question... how do you know which sellers are reputable and which ones are not? Everyone seems...

AGM batteries stored for 4 months in a heated garage... doesn't sound like you need to worry about float or trickle charging them. Since you can just top them off before you use them again. A quick Google search says to expect about 3.5% self discharge per month, so for 4 months that would be...

I have 8 Calb 200 AH cells that I received earlier this year (bought on AliExpress) and I recently purchased a DL24P capacity tester. The plan is to capacity test each cell as I suspect they are actually grade B cells that were sold as grade A cells. I used the batteries this summer in my...

Since you mentioned that you want to add a 3000W inverter to power the microwave. I think it's good to point out that a cheap 3000W inverter is probably a 'modified sine wave device' and it will not work correctly with a common AC microwave as they need a clean AC signal (pure sine wave) to...

time2roll, For my application I plan on installing the new batteries inside my RV, and I am not interested in listening to a high-pitched whine coming from the balancer, especially at night. Although you bring up a good point, if the balancer is not actively running, does it make any noise...

Eggo, Are they capacitor based or inductor based balancers or some other technology? -Mike

I was searching the other night for a simple 4s active balancer on Aliexpress to add to a new battery build and I came across one vendor that mentioned their board would make a small "high pitched sound" while it was running and they made it sound like that was a feature. To me that screams...