Quick question for ANYONE familiar with LifePO4 battery charging…. We have a radio repeater sitting at a mountaintop site that has utility AC power supplied to the building it’s housed in (+ LPG standby generator). It is a 12 VDC unit and is currently supplied power via a 12 VDC / 20A power supply. It has a secondary 12VDC input (no charging or power output to this input) We are not using the 2nd input now, but would like to place a 12V / 100Ah LifePO4 on the secondary input. Current draw of the repeater = 1.5 A standby / 3 A receiving / 14 A when transmitting). In the event of a utility power failure AND standby generator failure, the battery will last approximately 36-40 hours. That’s enough time for us to get someone up to the site to address the problem. THE BIG QUESTION = Can we a LifePO4 12V/100Ah battery and have it sit idle with this Redodo DC-DC charger “maintaining” the battery? We’d love to go solar eventually, but for now, we would power the DC-DC charger from a new spare 120VAC to 12VDC / 40a power supply that we have sitting on the shelf.. We wouldn’t want to “float charge” it, like the battery “tenders” we used to use on lead acid batteries left idle for months…. We’d just want it sitting idle and keeping it at 100% SOC , or even better.. at 80% charge. If the battery is used, when AC power is restored, we’d like the battery to be charged back up. Thanks! Thank you for a great channel!
@rabbitpumpkin8279 if there is no house battery hooked up will the solar input charge the starter battery or does it need to be in "reverse charge mode"?
@@donjosevalle it does, but the amount of extra power the engine needs to provide in order to spin the alternator faster in order to work a little harder to produce more energy/electricity, is very negligible. It would have to be running at a super high RPM for a very long time to make even a noticeable difference.
Just picked on up / This video will be very helpful!
cool ty
good test. It has reverse charging also, I wonder if it is a smart charger in reverse charging mode. Product documentation seems sparse online
Yeah, you know I hadn't considered anything about the reverse charging capability. I forgot it had that capability. Nice to have!
I have the Litime version of this. Very nice charger.
@@ebenezerwoodworking3616 Good to hear!
Quick question for ANYONE familiar with LifePO4 battery charging….
We have a radio repeater sitting at a mountaintop site that has utility AC power supplied to the building it’s housed in (+ LPG standby generator).
It is a 12 VDC unit and is currently supplied power via a 12 VDC / 20A power supply.
It has a secondary 12VDC input (no charging or power output to this input)
We are not using the 2nd input now, but would like to place a 12V / 100Ah LifePO4 on the secondary input.
Current draw of the repeater = 1.5 A standby / 3 A receiving / 14 A when transmitting).
In the event of a utility power failure AND standby generator failure, the battery will last approximately 36-40 hours.
That’s enough time for us to get someone up to the site to address the problem.
THE BIG QUESTION = Can we a LifePO4 12V/100Ah battery and have it sit idle with this Redodo DC-DC charger “maintaining” the battery? We’d love to go solar eventually, but for now, we would power the DC-DC charger from a new spare 120VAC to 12VDC / 40a power supply that we have sitting on the shelf..
We wouldn’t want to “float charge” it, like the battery “tenders” we used to use on lead acid batteries left idle for months….
We’d just want it sitting idle and keeping it at 100% SOC , or even better.. at 80% charge.
If the battery is used, when AC power is restored, we’d like the battery to be charged back up.
Thanks!
Thank you for a great channel!
It's most likely 20amp mppt and 20amp alternator charging for 40amp total on some models
This unit does only either or. Alternator it’ll charge at 40a. If that’s not available it’ll use Solar.
I just wired up my Litime. It is identical to the Redodo. Off idle pushing 37.5 amps.
@@rabbitpumpkin8279 Yes, correct. Going strong now for several weeks. No complaints yet!
@rabbitpumpkin8279 if there is no house battery hooked up will the solar input charge the starter battery or does it need to be in "reverse charge mode"?
Putting a load on your alt dors not affect your gas milage. The alt spins with the same force and rpm regustdlrss
Sorry, bruh, but I think you’re wrong. There is increased resistance the higher the draw.(I think).
@@donjosevalle it does, but the amount of extra power the engine needs to provide in order to spin the alternator faster in order to work a little harder to produce more energy/electricity, is very negligible. It would have to be running at a super high RPM for a very long time to make even a noticeable difference.