Paulbloggs

What about just setting suitable maximum voltage and current to match the battery in the victron and letting the battery take care of itself?

Is it possible to connect a Victron Multiplus II to lithium batteries without using a Cerbo or ColourGX device? I have a raspberry pi with venus OS but I think it will need canbus to connect to lithium batteries? My lead acids are dead after 13 years - cannot complain there.

Deliver to Joburg? Always Cape town or Durban are selling.

I have some 3x Suntech STP250W and 3x Solarworld SW230 panels. Voc = 37V Vmp = 30V I would like to add more to my roof so am looking for similar panels in multiples of 3. In Sandton, Johannesburg. I see there are some on offer in Cape Town and Durban for less than R500 each. Can collect in Joburg area. Regards Paul

It has been sold. Sorry for the delay but I couldn't find this post!!!

Sorry only checking my mail now.

THIS ITEM IS NOT WORKING. Victron Multiplus 48/3000/35 Inverter Charger. R1200.00 It was working perfectly until it occasionally started shutting down and restarting. This became more frequent over the course of several months until now it will not start up at all. Maybe you can repair it or use it to repair another one. Collection River Club, Bryanston.

I have an Outback Flexmax60 MPPT charge controller. On my roof are 3 Solarworld 230W in series. They are in parallel with 3 Suntech 250W panels. Now I would like to add another string to allow me to run my pool pump during the day. But of course the world has moved on and now you can only find 400W and bigger panels. How closely must the voltages match? The Solarworld have Voc 36.9V, Vmp 29.8V The Suntech Voc 37.4V, Vmp 30.7V I can get some JASolar 415W with Voc 37.45V, Vmp 31.61V Should work? Seems the system will be limited by the lowest voltage.

The Kodak VMIII 48V 5kW is R7530 from Segen and as you say only a few hundred more than the smaller inverters. I have read on this forum that the suppliers do not like to sell you less batteries than the inverter is rated for? So for a 5kW inverter I would need 104A = 4 Pylontech US2000. Now in this case I am supersizing the inverter but do not need the kWh capacity for the current anticipated load. I anticipate I will need 1.5kWh (that is a very generous guess) so will need only 1x US2000.

If it was for me personally I would be in 100% agreement. But it is for an elderly couple who are adamant they will want nothing more than their TV, DSTV and a desk lamp. This is why I am aiming for a 2 - 3kW inverter. I have successfully supplied these 1kW trolleys before for similar loads but after the repeated failure of the gel 100Ah batteries I will only supply lithium batteries in future and thus need a compatible inverter. The PV input is for the future since Bryanston is experiencing longer and longer power failures as load shedding drags on. The Growatt looks attractive. How about Solis? Solis 3.0kW Mini 4G Single Tracker?

I would like to start with the battery - I want to use 1 or 2 Pylontech US2000B/US3000 batteries. I have had it with lead acid batteries. I need a smallish sine wave inverter of say 1 to 2kW that would have a MPPT input for future use. Backup power only. Obviously compatible with the Pylontech without any fancy interfaces. Recommendations? Regards Paul

Is it possible to upgrade the firmware on a Mecer SOL-I-AX-5M so that I can use Pylontech batteries. The inverter was made in November 2017. Not sure of the serial number as it is hidden behind the adjoining panel. And if so, can you explain in simple terms? Regards Paul

Again - that would require a separate supply to the pool - long cable.

Yes but how do I control the sonoff? I already have an ACDC smart switch turning the pump on and off. But needs a cell phone to do that. Would like a relay to indicate power fail and send the signal.

That would involve installing a long power cable. Trying to avoid that.