Dam5reey:


This simply show quality, as I always say Chinese brand always overrate...

I have been using Full River 200AH... Bought from kiekie1 fairly used... The battery performance is still the same as a new battery, my inverter has never beep low battery since April 2017..

I have only 220watts panel, Also I don't discharge more than 120watts at a time.. I use energy efficient appliances..

When my inverter complete full charge I noticed the controller will continue to put about 3 amp for some hours... It's never fully charged

I will take time this week to do capacity test.. charge to full, then use straight till my inverter beep low battery...

Thank you sir. My mind is at ease now.
I wonder who imports these Chinese brands with deceitful ratings, specifications and all that.

NiyiOmoIyunade:
You should be glad and rejoice Sir over your new batteries.

The issue is amp hour capacity . Your new batteries are still testing close to their rated 100ah capacity and since you are ostensibly using thesame charge rate as before, they take a longer time to get fully charged up.

This is a good thing especially if they now provide backup for longer hours than the old set as you seemed to indicate.

What you now have to ask yourself is what happened to your old set of chinese Gel batteries which have now lost capacity? How old are they now? Couple of months or over 1 year old? If they are less than a year old then you definitely need to change your battery management practices (ensure daily full charge, no more than 30 to 50% discharge per time) so that these new Fullriver batteries will not suffer thesame fate as the old chinese Gels you have.

PS: When fully charged and at rest without any charge source connected for some hours, it is normal for a lead acid battery to read anywhere between 12.8 and 13.2 volts per 12v battery. So you have nothing to worry about there.

In fact in my experience, the batteries that show up with very high voltage at rest e.g 13.2volts and higher tend to be the weakest

Good morning and thank you sir. Concerning your question, yes, the old Chinese GEL batteries were kind of abused, well not by me.
At about a specific time, I had visitors whom would still go ahead to turn on those power guzzling ceiling fans even when I have asked
them not to . . . And for the one week they stayed, I can say for certainty the inverter shutdown every single day; sometimes I wake up to see
11.1V. Something told me it would have a negative effect sooner or later. They are not up to a calendar year.

Good morning to you all and happy celebrations.

Please welcome me, I am a new member here.

Permit me to ask a few questions:

I have been using Chinese GEL batteries for sometime now; and I just got me two sets of FULLRIVER AGM 100AH batteries.

But I noticed something. The FULLRIVER batteries take more time to charge than the Chinese batteries even on the same solar array.

I am confused. Why is this?

Then when it finally got full, I noticed that the resting voltage is at 13.0V; while the Chinese one stays at 13.1 rest.

Is 13.0V a normal rest voltage for a fully charged AGM battery?

Finally, I used the AGM batteries on the same load as the Chinese ones and this battery refused to die.

Or perhaps, it hasn't calibrated well enough?

After three hours thirty minutes, it went to 12.5V and I stopped, it bounced back to 12.7V

The Chinese ones on the same load and time, would have gone to about 12.3V thereabouts.

Somebody, please come to my rescue because I am thinking the AGM battery is bad; especially as it takes more time to charge

and rests at 13.0V

Thank you.

JUO
kiekie1
makavele
Damreey5
zeestone99
DMerciful1