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Thank you for the great forum, Safe Driving over the weekend. Sincerely Jason


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  1. You have the FBIADTUEL DTU ? If yes, the manual is the correct one. See step 7. "Enable zero export & Transmitter setup" ?
  2. One for me please for a friend...
  3. @Coulomb, if the Axpert (=Kodak) King does have Pylontech support (ie Q5 has option PYL) then would it be able to communicate with the Shoto battery mentioned in this post ? The Shoto does have a RS485 port. Information on this battery is virtually non-existent...
  4. This is an intersting topic. Further to the wise words of the posts earlier, the small UPSs are not designed to run for hours... hence the short run times that phLOx is getting. This is normal ! I too have replaced the batteries on UPSs with larger capacity ones. What nobody has mentioned yet is that the heatsinks on the MOSFETs small UPSs while running on battery are rather small. They are only designed to handle the temperature rise for a 7AH battery which would have gone flat before any excessive temperatures were reached. It is easy to check this, open the UPS and see if the heatsinks are blocks of aluminium or the better solution of heat sinks with fins. The block of aluminium is good for drawing heat away from the semiconductors (but only for a short time before the 7AH battery has gone flat). The finned heatsink is better for continuous operation as the heat will be better able to be removed from the MOSFETS. If you increase the capacity of the battery eg going from 7AH to 12AH or 100AH it will work but beware the temperature rise which could lead to failure of the MOSFETS. I have converted a number of UPSs for fun to run on 18AH batteries and added in fans to cool the finned heatsinks. Those blocks of Al don't cool well enough. It was mentioned earlier about the charger inside the UPS. Yes the charger will need to work harder and longer to charge the higher capacity battery. Typically the small UPSs use a LM317K voltage regulator to charge the battery and they are on a very skimpy heatsink (yes skimpy because it was only intended to charge a 7AH battery ). I had one of those on a 18AH battery and the PCB was scorched where the regulator was situated due to the high temps. Finally you do get UPSs that are designed to take massive battery banks eg the APC SmartUPS which you can add multiple external banks of batteries. These UPS are designed to handle extended run time ie the heat of charging and when running on batteries. Also they charge at a high current - on mine the UPS fans switch on when charging at a high current. Each one of the external battery boxes takes 4x 18AH batteries (this UPS is a 24V model). The cost to replace the batteries is rather high so mine is now fitted with 2x 100AH gel batteries. Yes next time to be replaced with Lithium battery.
  5. The Shoto SDA10-4850 50AH lithium battery has a row of connectors on the front panel for digital outputs. I am trying to find out what they are. Googling this has been unsuccessful. And, does anyone know who the local distributors for Shoto are ?
  6. Hi Soltaro Where are you based ? If it is a month old then the unit would still be under warranty ?
  7. In the past I have sold lead acid batteries to First National Battery in Benoni. Give them a call on 011 741 3600 and see what they pay per kg. You have to take it there and they weigh it and do an EFT into your account.
  8. Bobster you could use a Geyserwise controller which would give you the benefit of being able to easily monitor and control the temperature of the geyser's hot water. Drawback is that it is a lot more expensive than the Sonoffs.
  9. +1 that you need another Pylontech to run in parallel. A US2000 instead of a US3000 may suffice as it would supply steady state current of 25 A. That 25A plus your existing 37A = 62A A cheaper alternative is look for a new kettle with a lower power element
  10. @IdlePhaedrus FYI Youda, elsewhere on this forum, is using the following device to control power fed to his geyser. https://www.newark.com/carlo-gavazzi/rm1e23v25/ssr-panel-mount-265vac-10vdc-25a/dp/46M4269 This unit is fancier than your Communica unit as it controls the phase angle depending on the value of the input voltage (0 to 10VDC). Unfortunately it is a lot more expensive than the Communica unit. Let us know how it goes with your testing BTW Your geyser element is on the limit of that device from Communica. Their website for the 6kW dimmer says " 3KW power for normal use recommended" https://www.communica.co.za/products/cmu-ac-speed-dimmer-contr-6000w
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