Forum Discussion

siremike's avatar
siremike
Explorer
Apr 01, 2021

Lithium battery alternator charging.

I was thinking about going ahead and upgrading my house batteries with drop in lithium batteries, not sure now.

One advantage of the batteries is they have low resistance and can charge quickly due to the ability to receive high amp charging.

I recently viewed a Victron video displaying how a continuous high amp charging rate can overheat your vehicle alternator. (smoke coming from alternator)

This is concerning as I would hate to ruin the alternator

I read a lot of people just replace their AGM batteries with no discussion of alternator upgrades/changes, etc.

So I am basically asking if anyone upgrades have any issues with charging using the vehicle alternator

mike
  • otrfun's avatar
    otrfun
    Explorer II
    Apr 10, 2021
    pianotuna wrote:
    Nice overkill on the wiring. Well done.
    Thanks!
  • Slownsy's avatar
    Slownsy
    Explorer
    Apr 11, 2021
    I only just yesterday connected my phone tru my OBD blue tooth and it shows my 2015 F350 6.7 batteries at mostly 14.1V between 14-14.2 on a1hr drive. I believe the charging for camper is true a 30A fuse to rear plug, I don’t know what voltage at rear plug. I guess I could connect to FW from my 00 cable at rear for my winch, will have to se about the voltage drop about 13m run.
    Frank.
  • deltabravo's avatar
    deltabravo
    Nomad
    Apr 16, 2021
    siremike wrote:
    I recently viewed a Victron video displaying how a continuous high amp charging rate can overheat your vehicle alternator. (smoke coming from alternator)


    Victron makes several DC to DC Chargers, buy one, install, problem solved.
    Orion Smart TR 12-12 30 which is code for 12 volt to 12 volt, 30 amp.
  • deltabravo's avatar
    deltabravo
    Nomad
    Apr 16, 2021
    pianotuna wrote:
    Place the dc to DC charger between the battery positive and the charge cable. Done!


    DITTO!.

    That's all there is too it.

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