Recent content by jpcjtrtj

My helpers were less than ideal . . . and left to my own devices, apparently I'm not a good double checker :). The fuses on the converter/charger are there for reverse polarity . . . They work :).

Sooooooo.... I'm the guy in my camper club that loves batteries and solar, etc. This weekend I helped a friend put panels on the roof, upgraded the batteries to Lithium, added a Victron Solar Charge Controller, Orion Charger, and Phoenix 1200 Watt inverter. Pretty straight forward stuff. We...

You have to to to Alaska and see the Hammer Museum. https://www.hammermuseum.org/. Worth every bit of the $7 admission price.

Hi, My Ford F150 just left this earth (blown turbo which warped the engine block @ 125,000 miles); so I replaced it with a Dodge 2500 with the 6.7 Cummins diesel. In the Ford, I ran 2/0 wires from the battery positive and the chassis ground through the frame to the back bumper where I have a...

I did 2x; but they are not perfectly matched and the delta between cells at the top means some hit 3.65V before others causing the BMS to go into over voltage protect mode. I decided to limit the charger to 14.4 volts… for my purposes, that’s close enough. After a full week of dry camping...

The question here is should I leave the converter charger in the Lithium constant 14.6 volt mode (and re top balance the cells), or use the normal mode (14.4V/13.6V/13/2V) where this problem doesn't happen; or something else. I built and added the 280 AH EVE battery to my trailer. I moved the...

I have 300 watt Massimo solar blanket; it has xt60 port (which is wired backwards). Compensating (I.e flipping wires to correctly feed my charge controllers) for that it shows 30 volts in clear sun; yet Victron 100-30 and cheap charge controllers read nothing. Any help? Allegedly, the xt60...

The over 20k current?

Hello all, Two of my friends have these plug and play batteries. They are currently using MBRF fuses on the terminals, which has a 10,000 amp AIC rating. When I look at the specs for these batteries, I've found Renology claims to have a less than 30 milliohm IR and the Lion battery to have 5...

My uses are pretty small in comparison. That's a good point on the voltage @smoothJoey. I hadn't looked at that. My 280 AH battery is 13.6 nominal; so MBRF is AIC rated 10,000 ohms for that application. But with the low IR, i went with the Tfuse as the main fuse on that battery. But...

But these CATL batteries are .39 mOhms. So, I'm thinking I need a 125 amp T fuse. So far, no luck at finding a holder for that . . . 3.2V 100Ah CATL LiFePO4 Battery cell with screws for easy connection Module:001CB270 Nominal Voltage:3.2V Nominal Capacity:100Ah Internal...

I'm looking at an 8s battery at 25.6 V at 100 ah. With no idea of the IR at this point. My 280 AH 4s EVE battery spec chart says .25 milliohms per cell; or 1 milliohm for 4 cells? That gives me a dead short of 14,600??? (14.6 divided by .001) I use a T fuse on that battery. I suspect these...

my sense is the internal resistance of the battery is the IR of each cell times 8. The bus bars and bms may add more, but don't you want to use the base level for figuring out your fuse? Any additional resistance from the other stuff adds a level of safety. jps

Does anyone know the internal resistance of these batteries? A class T fuse would be have an AIC rating of 20,000 amps where a MBRF fuse is 10,000 amps. An internal resistance over2.5 milliohms (.0025 ohms) would allow for a MBRF fuse. Under that requires a T fuse. Thanks in advance.

So, I couldn't help myself. I wanted a power meter (so I added a shunt). I wanted to turn the inverter on and off without opening it (so I added the inverter switch). I wanted to solar charge it without opening it (so I added and SAE power input). Also, I wanted to plug in to 2 power outlets...