Thanks, i have now earthed the batteries. The DoD is set to 80%, can this only be changed by updating the firmware? Mine is version 2.50. Would you be able to do a walkthrough video showing how to upgrade the firmware or is this too risky?
Hi, thankyou for the very informative videos. I had two us3000 batteries and a sofar me3000sp installed a couple of years ago and have just decided to add a us5000 battery which i have just done with the help of your videos. However, I have noticed tgat when it ws installed originally, the istallers have not earthed the batteries. Should i add an earth and is it ok to run an earth from a nearby socket? Many thanks again
If the installers haven’t earthed the batteries then it’s wrong . As to the current load output of the bigger us5000 battery you have, correct earthing should be made direct to the earth bar in your electric cupboard , not just a earth in a socket. If your batteries are not earthed it’s dangerous and your system shouldn’t be used until correct earthing to earth bar is made.
Hi, I have pylontech US2000B v2 batteries, 2x in parallel. I'm having a bit of trouble understanding the correct discharge power limit from the batteries. The shop I bought the batteries from says that the maximum discharge power limit is 1200W (for a single 2.4kWh battery) and many forum posts seem to agree with this figure. However, the battery specification says that while the continuous rated discharge power for a single battery is 1200W, 2400W for 5min is possible. Which value is correct? (My sunsynk 5kW hybrid inverter Li-BMS page [value read from the pylontech BMS] shows a discharge current max of 50A, which at roughly 48V translates to 48V*50A = 2400W, I assume this value is per battery, in which case that implies that the 2400W per battery limit is correct).
The us2000b is a old battery now. But as these are connected in parallel , if you have a load 3kw then if you have 2 batteries then the load is split equally between them by your inverter. The limit for 2.4kw is correct for a single battery yes. As these are rated at this value. The us3000c can do 3.5Kw load (75amp draw) and us5000 the mega battery has a 100 amp maximum draw with 4.8Kw load. So the us2000b is only 2.4kw load and 50 amp draw, so the lowest one from the range. You probably need more battery storage to take advantage of your 5kw inverter load. For example another new 3.5Kw us3000c battery but this may be incompatible with your older us2000b.
