Calvin

Price reduced: R6000 each, R36k for all 7

Yes I do. Please PM me for more details.

Item: Pylontech US3000 batteries (7 available) Age: 5 years, 730 to 780 cycles (93% SOH) Price: R6000 each, R36k for all 7 Payment Method Accepted: EFT Warranty: Remainder of 10 year factory guarantee Packaging: Could be arranged Condition: These batteries have been babied: never discharged or charged at more than 0.25C, never discharged below 28% SOC, kept between 20 and 30C (air-conditioned enclosure), never kept at 100 SOC for more than a few minutes. Full history and logs available. Location: Stellenbosch Reason: Upgrading to 16S system. Shipping: At buyer's expense. Collection: Preferred. Link:

They did not - the US3000 is 74Ah, the US2000 is 50Ah. BatteryView states the model ("Device Name") - does it say US3000 or US2000? If US2000, perhaps somebody replaced the BMS with that of a US2000. If US3000, perhaps the BMS got reflashed at some point with an incorrect version.

You need to be a bit careful with Pylontech cycle count/SOH: there is a simple console command that resets it! There is a built-in BQ34z100 chip that also calculates and stores the cycle count and cannot (to my knowledge) be reset, but few know about it. You can use command socsh to read it - result is in hex. Note: the BQ34z100 data is correct on US2000 series, but not for US3000 (due to being scaled for a 50Ah battery).

Yet the label shows manufactured Feb 2019. Yet the label shows manufactured Dec 2022.

I do exactly the same as @HennieL even though I live in a more temperate climate (Stellenbosch). I use a box insulated with 50mm Isoboard and heated with 2 28W heating pads (Adjustable Heating Pad With Plug 28W | Shop Today. Get it Tomorrow! | takealot.com). In summer the box gets cooled with a small air conditioner when the batteries approach 30C. I always keep the cell temperatures between 20 and 30C. The motivation is simple: Pylontech's own research shows the huge impact of temperature on cycle life.

Correct. Only problem: they do not give the model number anywhere on the product page. Quite right, I missed it. Balance current 0-2000mA (adjustable) Only problem is, when I queried it, this is the reply I got: "The bms's are the 1A versions. " Quite right. The only issue is that the older ones will get no future firmware updates. If that is not important to you, no problem. It is to me.

One thing to be aware of: Their EVE cells are B-grade. They do not specify them as A-grade, but they also do not tell you that they are B-grade. Similarly, they do not specify the balancing current of the JK BMS they sell, but on enquiry it is the cheaper 1A version rather than the 2A version. It is also the older version 15, not the new version 19.

It is a Mac Afric 5kW Silent Diesel. It does not have auto-start. See https://www.adendorff.co.za/mac-afric-6-5-kva-5-kw-standby-enclosed-type-diesel-generator-220v-single-phase Note that this is a 3000rpm backup generator, fine for occasional use. (Mine runs less than 20 hours per year). If you expect frequent use you should consider a 1500rpm standby generator.

@JK84 has a Deye, which allow the inverter to limit the power it takes from the generator. That means that the old rule of needing a generator with double the inverter capacity does not apply. I use a 5kW diesel generator limited to 3kW with my 16kW Deye and it works beautifully. When my loads are under 3kW the excess generator power goes to the batteries. When the loads exceed 3kW the batteries supplement the generator.

On these Pylons SOH is a very crude, hard-coded estimate. For the first 1000 cycles: for each 100 completed cycles the SOH is decreased by 1%. Thereafter, for each 167 completed cycles the SOH is decreased by 1%. SOC is calculated based on Coulomb counting (from full) using the current SOH. The exception to this is when charging above 89%, or discharging below 11%, SOC is based on a lookup table using the lowest cell voltage. That is why, when charging, the SOC seems stuck at 89% and then suddenly shoots up. A further exception is that, when discharging, if any cell voltage gets into the values contained in the lookup table, the SOC reported for the pack is that value. This is why SOC will suddenly drop very quickly if there is a weak cell in the pack. I have the full set of voltages and corresponding SOC values available if anybody is interested.

Please tell me that you are joking. If not, do you really think that it is a good idea to pollute this forum with far-right political conspiracy theories?

The OP has a Sunsynk and batteries. That allows him to limit the power drawn from the generator. Not all inverters have that ability.

That seems excessive (and VERY expensive). I have a 5kW generator supplying a 16kW Deye (set to draw a maximum of 3kW) and it all works perfectly, obviously as long as your average loads do not exceed the 3kW.