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* Input Rated Voltage: DC 36V 48V 30-50V
Which one are you going to believe?
(original post edited to show 50)
Edited November 23 by hemsteadc
one is a typo i believe. States 30-60 twice. Will know soon. I do appreciate your concern though.
I was referring to Victron line of 24 to 12 volt dc to dc converters. Forgot you were using 48. They are not chargers but can be used as a charger to charge a 12 volt pack from a 24. This is a 48 https://www.invertersupply.com/index.php?main_page=product_info&products_id=185548&gclid=Cj0KCQiAq97uBRCwARIsADTziyZiZIbbIKXI7gTH0gv4aZ6xiMWXEqvejggGhEbwkTrCujdYfQkdrnQaAtekEALw_wcB
I was referring to Victron line of 24 to 12 volt dc to dc converters. Forgot you were using 48. They are not chargers but can be used as a charger to charge a 12 volt pack from a 24. This is a 48 https://www.invertersupply.com/index.php?main_page=product_info&products_id=185548&gclid=Cj0KCQiAq97uBRCwARIsADTziyZiZIbbIKXI7gTH0gv4aZ6xiMWXEqvejggGhEbwkTrCujdYfQkdrnQaAtekEALw_wcB
sorry Dave but that is a 24v. Victron doesn't make a 60 amp unit. Would have to buy at least 2.
That why wanting to try these Chinese units. 100.00 dollars so if it doesn't hold up not out of a lot.
. ......what will it do to the batteries (FLA or Lithium) though?
Oh, it will be fused
Edited November 25 by GlennWest
Oh, it will be fused
Does it controlcharing so the battery bank is not over/under charged?
FLA is bulk 4 stage bulk - absorb - float - standby - equalize (sometimes)
Lithium is 2 stage - bulk - float (cutoff after X minutes) with temp & voltage disconnects
Does it controlcharing so the battery bank is not over/under charged?
FLA is bulk 4 stage bulk - absorb - float - standby - equalize (sometimes)
Lithium is 2 stage - bulk - float (cutoff after X minutes) with temp & voltage disconnects
Do What? It won't be charging anything. Simply suppling trailer with 12v from 48v.
To solve the problem of the large amperage draw of the slide motor I decided to just go with 2 battery banks. I have 620 watts of solar charging a couple GC-2s for my 12v needs. I mounted these panels on the side of my MH leaving the entire roof free for racking 9, 320w solar panels front to rear for my 48v system. This will charge a much larger 48v bank for my big inverter and 48v DC mini-split heat pump.
Not only is this setup cheaper than a big 48-12v DC-DC inverter, but it provides additional energy storage as well as not suffering any inefficiency in the conversion process. Plus I have a small (600w) PSW 12v inverter that I use to power my entertainment center, computer and printer. It also serves as a back-up for minor 110v needs should the main 48v inverter go down. Also should the coach battery prove too weak to start my MH one day, these 2 GC-2 house batteries have enough starting amps to help start my coach. The coach manufacturer provided a dash mounted starter boost switch for this very purpose. I wouldn't lose this safety feature by eliminating my 12v house batteries. If I'm just using a limited amp (say 50 amp) DC-DC converter it may be powerful enough to work the slide, and start the generator, but not enough to start the engine in an emergency.
Chip
Edited December 2 by sushidog
I don't have a motorhome though. No onboard generator, so no real need for 12v batteries. Slideouts are on 50 amp relays.
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