Understanding solar panel charging for lithium batteries

[Raul]

Set your solar charger at the pre set lifepo4 profile, hook up the battery, and let it charge. Open the ap for solar and watch the voltage. With a multimeter in the same time, at battery terminals read the voltage. Compare the two. It should be close to no more than 0.1amp difference. As solar 13.5- battery 13.4v max.
You can also read the voltage with the meter at solar end and compare the app with your meter, to confirm your meter reads close to the app readings.

 

[Moto GBR]

I think the charger is small, or not able to deliver a high enough voltage. At 13.3v, it should gobble amps in, all the way to about 13.8v, then it starts to tapper of the amps, then hold at 14.4v for about 10-15mins. If you can achieve that, you guarantee the battery is full.

Thanks

 

[treblid]

no more than 0.1amp difference

I think you mean 0.1Volts.....

 

[Raul]

I think you mean 0.1Volts.....

Yes, sorry volts of course.

 

[Jev88]

Motorbike chargers are usually low amps.

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[Moto GBR]

Motorbike chargers are usually low amps.

Thanks

 

[Moto GBR]

Another update. I took the battery off charge and put it back into the MH shown 62% charged and 174.1 ah. I connected from scratch again and connected the additional wiring I had routed from MPPT. Low and behold once I connected up the solar to MPPT after a few minutes the reading went into Bulk and I got the readings in the pic. Does this look ok ?

TA S