Search results

  1. L

    Wrong reading with battery monitor?

    Hi, my battery monitor shows for example right now, 35.66 amps going in via solar, which certainly is not correct as victron app is showing 11 amps and the jdm bms app shows 11amps going in. What would cause this? Any help is appreciated? The monitor is the ali express one shown in wills videos.
  2. L

    Battery monitor reading incorrectly?

    Thanks for the reply. Is it possible to calibrate an aliexpress monitor? The bms and victron app seem to share same reading with charging from solar unlike the monitor.
  3. L

    Battery monitor reading incorrectly?

    Hi, its the ali monitor from Wills video. The bms is jdm same as overkills. Ive also seen the monitor saying its receiving much more amps than it is according to my victron app. Ex 2-3 amps in victron app and the bms app but 7 amps according to the monitor
  4. L

    Battery monitor reading incorrectly?

    Hi, im 1 week into testing my new lifepo4 setup in campervan. It looks as though the amps coming in/out reading on aliexpress battery monitor is off. My bms app (jdm) will for example read 3 apms coming out while the monitor states 11 amps. Any advice is appreciated . The monitor seems out as i...
  5. L

    Cell spikes

    Thanks. The cell shows a different voltage when taken from the screw terminals to what the bms is showing so contact issue makes sense. It seems strange for at least one cell to go from 3.35 to 3.60 while the other stay around 3.30
  6. L

    Cell spikes

    Thanks for the reply. I haven't cleaned them at all so will try that. Yes, perhaps ill just get a charger to be safe as i dont want further issues.
  7. L

    Cell spikes

    Individual cells spikes when put on charge for first time. I have 200ah cells hooked up to jbd 120a bms. The cells arrived within 1-2 mv of each other. Grade A matched. I let them sit in parallel for a month while waiting for other things. I wanted to try a couple of cycles without top...
  8. L

    Lifepo4 earthing advice

    I would run the ground wire from neg bus to the actual underbody chassis of the van so should be good connection. The positive from charger to second battery is no more than 2 metres, perhaps 3m if run under van. I was planning to use 6 awg as it looks as if 4awg will be a tough fit, which i...
  9. L

    Lifepo4 earthing advice

    Option 1 goes to neg bus which is also earthed to chassis. Option 2 has a dedicated ground wire to chassis and the neg bus isnt earthed. Sorry this is my first time wiring this type of charger.
  10. L

    Lifepo4 earthing advice

    So then having the charger ground cable running to the second battery neg bus which is ground to the chassis? Or is it best to run the neg to neg bus which is isolated from chassis and run a seperate green earth to chassis common ground buIts the victron orion tri smart non isolated.
  11. L

    Lifepo4 earthing advice

    So then having the charger ground cable running to the second battery neg bus which is ground to the chassis? Or is it best to run the neg to neg bus which is isolated from chassis and run a seperate green earth to chassis common ground bus? Its the victron orion tri smart non isolated.
  12. L

    Lifepo4 earthing advice

    Thank you very much. That was an informative paper. Just to clarify, if you dont mind. Option 1 - It may be best for me to have a dedicated common grounding bus bar, isolated from the negative bus bar, as i have the victron non isolated dc dc charger, and i could have the inverter, dc dc...
  13. L

    Lifepo4 earthing advice

    All loads will have a negative run to The bus bar, which will be ground to the negative terminal. This completes the currents circuit, right? Im just getting clarification, ive always run an extra cable to the chassis in the past. Now correct me if this is wrong but, a cable run to the chassis...
  14. L

    Earthing lifepo4 campervan

    Thank you for the reply. If i have a twin cable for all devices which all negatives get run to the negative bus bar, which then goes to bms negative, is this not sufficient? Im just confused as i never see mention of earth to chassis in Will's info.
  15. L

    Earthing lifepo4 campervan

    Edit- found my answer. Better to ground to bus bar which goes straight to neg battery terminal. Earth to chassis not needed. Hi, any advise is appreciated. Do i need to earth the negative bus bar to the chassis with a lifepo4 system in campervan?
  16. L

    Please review my final diagram

    Edit: found answers. Extra ground/earth to chassis not needed. Run all neg to bus bar then batt neg. Hi, im just fine tuning my plans for 12v lifepo4 campervan system. I just have a couple of queries. Clearer picture. - Do i need to ground the negative bus bar to the chassis? - are...
Top