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I have just ordered a very pricey LiFePO4 battery to go with my 160 watt solar panel. Now I want a MPPT controller and I was hoping someone here could confirm this is the correct controller for the battery and panel. I believe it is the correct controller but I would like a second opinion please.
The charge controller:
https://fazcorp.co.nz/collections/mppt-s...v-ml2430-1
With a MPPT Bluetooth Communication Module so I can monitor the solar system from my Amazon Kindle:
https://fazcorp.co.nz/collections/mppt-s...ies-bt-1-1
Solar panel:
Standard power: 160 Watts
Maximum power voltage: 17.8
Maximum power current: 9.0A
Open Circuit voltage: 21.1V
Short Circuit current: 9.5A
LiFePO4 battery:
Nominal voltage: 12v
Capacity: 100Ah
Discharge cut-off voltage: 8.4v
Operating voltage min 11.5 V - max 14.8 V At 80 % DOD
Optimal discharge current < 50 A
Charge voltage: 14.6v
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(07-19-2019, 11:26 PM)GimmyTree Wrote: LiFePO4 battery:
Nominal voltage: 12v
Capacity: 100Ah
Discharge cut-off voltage: 8.4v
Operating voltage min 11.5 V - max 14.8 V At 80 % DOD
Optimal discharge current < 50 A
Charge voltage: 14.6v These specs suggest to me that the manufacturer considers 14.6 to by the terminal voltage at Full charge and 11.5 to be the terminal voltage at 20% SOC. The discharge against SOC would show very little capacity difference between 11.8, my preferred figure, and 11.5 My preferred Low Voltage Cutoff contains a little bit of safety margin that is mostly psychological. Yeah, I could go lower but don't need to and there is a lot less anxiety for me in the slightly higher figure.
Similarly, I prefer charging my LiFePo4 batteries to 14.2 as again providing a small safety margin against over charging.
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07-20-2019, 02:27 AM
(This post was last modified: 07-20-2019, 02:28 AM by GimmyTree.)
(07-20-2019, 02:17 AM)Ticklebelly Wrote: (07-19-2019, 11:26 PM)GimmyTree Wrote: LiFePO4 battery:
Nominal voltage: 12v
Capacity: 100Ah
Discharge cut-off voltage: 8.4v
Operating voltage min 11.5 V - max 14.8 V At 80 % DOD
Optimal discharge current < 50 A
Charge voltage: 14.6v These specs suggest to me that the manufacturer considers 14.6 to by the terminal voltage at Full charge and 11.5 to be the terminal voltage at 20% SOC. The discharge against SOC would show very little capacity difference between 11.8, my preferred figure, and 11.5 My preferred Low Voltage Cutoff contains a little bit of safety margin that is mostly psychological. Yeah, I could go lower but don't need to and there is a lot less anxiety for me in the slightly higher figure.
Similarly, I prefer charging my LiFePo4 batteries to 14.2 as again providing a small safety margin against over charging. So I guess I can also charge and discharge the battery to the same levels as you (14.2 & 11.8). Sweet
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07-20-2019, 03:44 AM
(This post was last modified: 07-20-2019, 03:46 AM by rvpopeye.)
It states it can charge LiFePo and the price sure seems decent.
Guess you'll be our beta tester.....best of luck to ya !
Keep us updated and ask anything else that you need input on...
......on another note,,,,have you checked out the YARC yet ?
(Only the very most "Ain't Right" are eligible ,unless
you're any kind of musician , you're already IN !
Read post #1 first)
OOOOO , almost forgot , post pictures as you go , nothing more requested on this forum,,,,(if no pics , it didn't happen ! )
stay tuned
popeye
Weirdo Overlord : FMS Fleet Ops , Awards , Badges , aka Tamerlane the Impaler Mod.
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(07-20-2019, 03:44 AM)rvpopeye Wrote: It states it can charge LiFePo and the price sure seems decent.
Guess you'll be our beta tester.....best of luck to ya !
Keep us updated and ask anything else that you need input on...
......on another note,,,,have you checked out the YARC yet ?
(Only the very most "Ain't Right" are eligible ,unless
you're any kind of musician , you're already IN !
Read post #1 first)
OOOOO , almost forgot , post pictures as you go , nothing more requested on this forum,,,,(if no pics , it didn't happen ! )
I'll setup the solar system next weekend once all parts arrive, then I'll do some testing and give a review of the whole setup.
I'll check out the YARC tomorrow morning but for now I'm going to have to get some sleep. Struggling to stay awake as I type this.
I haven't really got anything to take photo's of at the moment, but I'll see what I have been able to put together by next weekend.
The following 1 user says Thank You to GimmyTree for this post:1 user says Thank You to GimmyTree for this post
• rvpopeye (07-20-2019)
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Yup yup , if you need any help post er up!
stay tuned
popeye
Weirdo Overlord : FMS Fleet Ops , Awards , Badges , aka Tamerlane the Impaler Mod.
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