LionKing

I understand that Deye 12kw hybrid has better features than Infini 10KW hybrid. But is it a better quality & more reliable product? I'm considering upgrading my infini to deye, but wondering if deye is a solid product?

My conundrum is that I want to maximize solar output but I can only fit 20-22 panels on my roof. So if I split 20 panels into two strings of 10, then I end up with 492V - and face some clipping. If I go with two strings of 11 panels, then I get 541V which is much better efficiency wise but now I end up with even more clipping during peak hours.

Does 26A+13A mean that one MPPT supports 26A and other 13A? I thought 26A was in 2x configuration? At least, the clipping would be only on one string, and only under ideal circumstances when string is outputting STC amps (NOCT amps are 10.72amps). While reviewing the Voltronic datasheet, I noticed there are two MPPT ranges: In my case each string will have 10x 575w panels, Voc = 406V (NOCT). If I go by Full Load MPP range, then string will be on lower end, OTOH, its within MPP voltage range. So is this string config good?

Planning on getting these panels: https://static.csisolar.com/wp-content/uploads/2022/09/06160941/CS-Datasheet-TOPBiHiKu6-TOPCon_CS6W-TB-AG_v1.8_EN.pdf I will create two strings of 10 panels each, each on its own MPPT (no parallel). Following are the output values with different bifacial gains: The voltages will be within range for both inverters, however, i'm unsure about the current Infini 10KW datasheet mentions Max input current 2x 18.6A...so that should be ok? Here's Deeye 12KW hybrid datasheet: Can someone please confirm, both inverters will work fine with these inverters? (assuming bifacial gain of 20%)

I haven't purchased these yet, still deciding between pylons and these. AFAIK, these dont come with cables at all, but cable mounting screws are M8. Key differences between Pylon UP5000 (only have that available locally) and Narada NESR: NESR is cheaper, uses 16 cells vs pylon's 15s, has 6000 cycles (15year design life) vs pylon's 4500.

The C rating of Narada NESR battery is 100amps. So two should have been 200amps. If you look at Parallel Expansion chart provided by Narada, the discharge amps increase isn't linear - when you add more batteries.

My understanding was that all Lithium batteries, when connected in parallel, double the discharge current capacity. Is that true? E.g. if I combine two US5000, then max continuous discharge current is 200amps @ 48v? However, was looking at datasheet of Narada NESR batteries about Parallel expansion. According to it, 1 battery supports 100amps discharge, but 2 batteries support 120amps discharge and 3 batteries 150amps? Does anyone know why 2x doesn't support 200amp and 3x doesn't support 300amps discharge? Is the same true for NPFC & pylontech batteries?

I think upcoming release of Solar Assistant will support updating inverter settings (AC Charge time etc) based on Time of Day. This would be useful for your scenario. I started using Solar Assistant few weeks ago its miles ahead of anything Voltronic has to offer, I won't be going back to my SNMP web card interface anymore.

You've had this settings issue ever since you got the inverter or after a firmware update? I'm a bit hesitant that my inverter might be a 'clone' and doing firmware update might screw something up.

No one here with Narada NESR experience? I see a few sellers in south africa selling this battery, surprised there is no feedback/reviews of it yet

@riogrande75 I'm gonna go ahead and give it a try. Can the firmware update only be done via inverter's RS-232 port or usb port as well? earlier you said to take out snmp card before firmware update, do I have to completely shutdown the inverter to do that or can I just pull it out/insert it while the inverter is ON?

The post you shared doesn't list UP5000 as one of the compatible models? Did you update the firmware in your UP5000 and able to do 0.9C discharge?

Thanks! is this official firmware update released by Pylontech for everyone or just Segensolar? I ask my local pylontech retailer yesterday, but he was completely unaware of the firmware update. On a side note, do you know what else is different between UP5000 and US5000? I'm now deciding between UP5000 (with firmware update) and Narada NESR48100.

While researching this, I saw your post from Nov, were you able to get the firmware update and able to push 100amps out of UP5000?

Are your Narada batteries still working fine without battery/inverter comms and just using voltages?

Thanks for detailed response. I made up my mind about Pylontech, unfortunately, we have older UP5000 models available here with recommended 50amps discharge current. However, a Narada distributor is selling latest NESR-48100 battery with 15-year design life, seems like the model was launched end of last year so not widely used yet. I'm thinking of going with that using bulk/float/cut-off setting method (without bms comms). Narada is a reputable company and this battery should be better than older NPFC model, what do you think?

Narada recently launched a new residential energy storage battery NESR-48100: 1. Link to Press Release 2. Datasheet 3. Link to Store selling it It's supposed to have Stackable design and 15-year design life. But I don't see any reviews or posts about this new model anywhere. Anyone has experience with it? My local seller (not in South Africa) is offering this battery with 5-year warranty. The pylontech model available here is the older UP5000 - which only allows continuous draw of 50amps. Narada is newer and allows 100amps with 15-year design life. Should I go ahead with it?

What issue did you have with Narada and Sunsynk? My local Narada retailer is saying I can use it just like a regular AGM/GEL battery by setting bulk/float and discharge-cuttoff voltages?

@Jay-Dee How are your Narada batteries coming along? Im deciding between Narada and Pylontech, pylons being 50% more expensive, otherwise would have just gone with those. The inverter I have is Voltronic infini 10kw, so no BMS comms with inverter, but trying to get my hands on modbus/RS485 card. Do you have comm link setup between Sunsynk inverter and Narada or still charging using manually bulk/float settings?

Do I need to update inverter fw to get BMS support, would just getting a modbus card also be enough, or do I need to do both to get proper bms support with Narada/pylontech lithium batteries?

Makes me wonder if I have a non-genuine inverter? and if I should just avoid updating the fw altogether since I can't revert back to the current one? I know of dual-modbus card, what's the bms-card, link? how are you doing it in software?

Is there a firmware update available for SNMP Web card as well? About inverter fw, if the new one doesn't work, is the one currently installed on mine (17-04-06) available? so I can revert back to that one. Edit: Since you're familiar with these, do you know the fan part number for these? Mine are 5 years old and they make considerable noise now. I'm thinking about replacing them with quiet ones. After firmware update, would BMS communication with lithium battery work via RS232/usb port or would I still need modbus card?

The last guy had the serial number erased when he did firmware update, is there a chance same will happen to my inverter? Any chance of inverter failure altogether? SNMP web card is basically for energy monitoring - although its quite terrible at data collection. Thinking of getting Solar Assistant, since there aren't any other good options for InfiniSolar.

Hi @riogrande75 Can you help me with firmware upgrade as well? Model on Sticker: InfiniSolar10KW-PAR-B Serial on Sticker: 961617061xxxxx Using Up/Down buttons here's the info I get: u1 17-04-06 b1 values on left column: 370 370 50 Firmware version as shown in SNMP Web pro: 00001.01 I want to update firmware to take advantage of BMS communication with Narada or Pylontech batteries. Is it possible to update SNMP firmware as well? It's currently: 1.0.6

Think I figured it out now. The Inverter is limited to 10KW AC (load or Grid). The key benefit of 15KW PV input is to do "DC Overloading" - I add more panels to the system so that during early and late hours of the day I'm able to get more output from the inverter. The obvious downside is that during peak hours, when modules can generate more than 10KW, the inverter will 'clip-off' the excess power. Details here: https://www.caresrenewables.com/post/why-is-the-solar-inverter-capacity-lower-than-solar-module-capacity-dc-overloading