Help choosing the right converter/charger?
Hi My TT has a Parallax 7345 converter. For the past year I have been using 550 watts of Solar and a MPPT controller charging my batteries. We have a 12V system at the moment. And I am using (4) 6V...
Forum Discussion
I have the same problem here with my latest planned battery system upgrade. I have the PD9260C 60AMPS COnverter/charger
I have been using three each GP24 85AH batteries and I have found my total demand from the batteries when first starting my 14.4VDC Boost charge will demand right at 52-53AMPS DC when first hit with 14.4VDC when they are at the the appx 50% charge state (Around 12.0VDC). This is around 17AMPS DC current for each of the three GP24 12VDC batteries in parallel.
I see this 53ADC Current for about 15 minutes and then it starts tappering back and in an hours time it will be down to around 8AMPS DC Current demand.
Then the PD9260C will go to the 13.6VDC Charge mode for the next two hours which will bring my three GP24 85AH Interstate batteries back up to their 90% charge state.
My new battery bank will have two groups of 6VDC GC2 batteries in series that will give me around 440AHs at 12VDC. I was hoping to find out how many DC Amps the groups of 6VDC batteries in series will demand from the charger.
My PD9260C is perfect for using my 2KW Honda generator providing 120VAC when camping off grid so hoping I will be ok using the 60AMP converter/charger. I am also hearing that the GC2 batterie like the Trojan T-105s which I am going to be using wants to see 14.8VDC boost charging voltage. I will only be providing 14.4VDC so I am planning all will be fine but will take a little longer to get from the 50% charge state to the 90% charge state.
I haven't got my batteries yet so will have to wait until I do to see if my planning on keeping the PD9260C is going to be ok...
The most I hear from other folks is that they use the PD9260C with their GC2 batteries and it works just fine haha
I will know more this coming spring when I can afford to purchase the four each Trojan T105 batteries for my new metal battery box setup...
this is what my three GP24 Interstate Batteries look like in parallel on my POPUP trailer tongue area...
Roy's image
If they were 12VDC batteries like my 85AH GP24 Interstates I would say base your converter/charger on having enough capacity for suppling 17-20AMPS DC Current for each 12VDC battery in parallel if you want to gain the 50% to 90% charge state in a three hour period of charging... If your total current is less that the 17-20AMPS DC current per battery the batteries will still charge just take longer to happen... This has been my experience at any rate...
Roy Ken
I have been using three each GP24 85AH batteries and I have found my total demand from the batteries when first starting my 14.4VDC Boost charge will demand right at 52-53AMPS DC when first hit with 14.4VDC when they are at the the appx 50% charge state (Around 12.0VDC). This is around 17AMPS DC current for each of the three GP24 12VDC batteries in parallel.
I see this 53ADC Current for about 15 minutes and then it starts tappering back and in an hours time it will be down to around 8AMPS DC Current demand.
Then the PD9260C will go to the 13.6VDC Charge mode for the next two hours which will bring my three GP24 85AH Interstate batteries back up to their 90% charge state.
My new battery bank will have two groups of 6VDC GC2 batteries in series that will give me around 440AHs at 12VDC. I was hoping to find out how many DC Amps the groups of 6VDC batteries in series will demand from the charger.
My PD9260C is perfect for using my 2KW Honda generator providing 120VAC when camping off grid so hoping I will be ok using the 60AMP converter/charger. I am also hearing that the GC2 batterie like the Trojan T-105s which I am going to be using wants to see 14.8VDC boost charging voltage. I will only be providing 14.4VDC so I am planning all will be fine but will take a little longer to get from the 50% charge state to the 90% charge state.
I haven't got my batteries yet so will have to wait until I do to see if my planning on keeping the PD9260C is going to be ok...
The most I hear from other folks is that they use the PD9260C with their GC2 batteries and it works just fine haha
I will know more this coming spring when I can afford to purchase the four each Trojan T105 batteries for my new metal battery box setup...
this is what my three GP24 Interstate Batteries look like in parallel on my POPUP trailer tongue area...
Roy's image
If they were 12VDC batteries like my 85AH GP24 Interstates I would say base your converter/charger on having enough capacity for suppling 17-20AMPS DC Current for each 12VDC battery in parallel if you want to gain the 50% to 90% charge state in a three hour period of charging... If your total current is less that the 17-20AMPS DC current per battery the batteries will still charge just take longer to happen... This has been my experience at any rate...
Roy Ken
