FLEXmax Charge Controllers

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String Sizing Tool for MX and FM Charge Controllers

Last post by raysun « Thu Feb 16, 2023 9:00 am
Replies: 100
by administrator » Fri Jul 18, 2008 10:36 am
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100 Replies

1581787 Views

Last post by raysun
Thu Feb 16, 2023 9:00 am

Topics

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Last post

System seems not to be charging properly after windstorms

Last post by raysun « Mon Mar 20, 2023 10:24 am
Replies: 3
by benwin » Mon Mar 20, 2023 12:48 am

3 Replies

45 Views

Last post by raysun
Mon Mar 20, 2023 10:24 am
Weather and Charge Rate

Last post by raysun « Mon Mar 13, 2023 5:39 pm

by raysun » Mon Mar 13, 2023 5:39 pm

0 Replies

26 Views

Last post by raysun
Mon Mar 13, 2023 5:39 pm
FM80 goes to Charged and stops charging the batteries

Last post by fcwlp « Sat Mar 04, 2023 3:52 pm
Replies: 19
by jose » Fri Jul 22, 2016 9:05 am

19 Replies

5261 Views

Last post by fcwlp
Sat Mar 04, 2023 3:52 pm
How to size a PV array for the FLEXmax charge controller

Last post by raysun « Tue Feb 21, 2023 3:51 pm
Replies: 2
by raysun » Sun Feb 19, 2023 5:18 pm

2 Replies

73 Views

Last post by raysun
Tue Feb 21, 2023 3:51 pm
FM80 fails to start up

Last post by raysun « Mon Feb 13, 2023 9:37 am
Replies: 1
by BruceCanaFox » Fri Feb 10, 2023 11:52 am

1 Replies

35 Views

Last post by raysun
Mon Feb 13, 2023 9:37 am
FM80 voltage no amps

Last post by raysun « Sun Feb 05, 2023 8:28 am
Replies: 8
by jtzako » Sun Jan 29, 2023 10:54 am

8 Replies

187 Views

Last post by raysun
Sun Feb 05, 2023 8:28 am
Input and Output Voltages for Charge Controllers

Last post by raysun « Fri Feb 03, 2023 8:43 am
Replies: 4
by provo » Thu Feb 02, 2023 6:23 pm

4 Replies

149 Views

Last post by raysun
Fri Feb 03, 2023 8:43 am
Low Voltage Error

Last post by ChairMtn « Wed Feb 01, 2023 7:24 pm
Replies: 2
by ChairMtn » Mon Jan 30, 2023 2:39 pm

2 Replies

92 Views

Last post by ChairMtn
Wed Feb 01, 2023 7:24 pm
Calculating short circuit current for array on FM80?

Last post by EA6LE-ONE « Thu Jan 26, 2023 4:11 am
Replies: 8
by jtzako » Wed Jan 25, 2023 10:49 am

8 Replies

128 Views

Last post by EA6LE-ONE
Thu Jan 26, 2023 4:11 am
Temperature compensation without RTS

Last post by raysun « Wed Jan 25, 2023 7:50 am
Replies: 1
by Jaromato » Sat Jan 21, 2023 12:44 pm

1 Replies

104 Views

Last post by raysun
Wed Jan 25, 2023 7:50 am
3 X FM80 + RTS + HUB

Last post by raysun « Tue Jan 17, 2023 5:19 am
Replies: 3
by Pocasluces » Fri Jan 13, 2023 12:04 pm

3 Replies

149 Views

Last post by raysun
Tue Jan 17, 2023 5:19 am
Adding 2nd array with 2nd FM80

Last post by jtzako « Mon Jan 16, 2023 5:47 pm
Replies: 7
by jtzako » Sun Jan 15, 2023 9:19 am

7 Replies

126 Views

Last post by jtzako
Mon Jan 16, 2023 5:47 pm
snoozing issue

Last post by raysun « Thu Jan 12, 2023 8:59 am
Replies: 1
by tech.mgr » Thu Jan 12, 2023 12:42 am

1 Replies

116 Views

Last post by raysun
Thu Jan 12, 2023 8:59 am
fm80-150vdc

Last post by tech.mgr « Tue Jan 10, 2023 5:57 am

by tech.mgr » Tue Jan 10, 2023 5:57 am

0 Replies

86 Views

Last post by tech.mgr
Tue Jan 10, 2023 5:57 am
MP80 CC marginal output in afternoon

Last post by raysun « Thu Jan 05, 2023 10:17 am
Replies: 3
by jainsw » Thu Jan 05, 2023 9:11 am

3 Replies

104 Views

Last post by raysun
Thu Jan 05, 2023 10:17 am
Voltage Calibration Issue

Last post by jcheil « Tue Jan 03, 2023 7:48 am
Replies: 2
by jcheil » Tue Jan 03, 2023 7:11 am

2 Replies

97 Views

Last post by jcheil
Tue Jan 03, 2023 7:48 am
Combining the positive wires from 2 charge controllers

Last post by raysun « Sun Dec 25, 2022 8:17 pm
Replies: 5
by pioneerMan » Fri Nov 18, 2022 8:45 pm

5 Replies

1755 Views

Last post by raysun
Sun Dec 25, 2022 8:17 pm
Cloudy/ foggy day settings FM60

Last post by Solarman7122 « Mon Dec 19, 2022 11:09 am
Replies: 5
by Solarman7122 » Sun Dec 18, 2022 10:54 pm

5 Replies

131 Views

Last post by Solarman7122
Mon Dec 19, 2022 11:09 am
Adding a 3rd FM 80

Last post by hrosendahl « Fri Dec 16, 2022 4:17 pm
Replies: 6
by hrosendahl » Fri Dec 09, 2022 8:25 am

6 Replies

1670 Views

Last post by hrosendahl
Fri Dec 16, 2022 4:17 pm
Equalizer problem

Last post by Jpgagnon « Fri Dec 16, 2022 1:21 pm
Replies: 2
by Jpgagnon » Fri Dec 16, 2022 4:10 am

2 Replies

93 Views

Last post by Jpgagnon
Fri Dec 16, 2022 1:21 pm
Equalizing

Last post by raysun « Thu Dec 15, 2022 9:22 am
Replies: 3
by arbolero » Sat Dec 03, 2022 5:36 pm

3 Replies

1767 Views

Last post by raysun
Thu Dec 15, 2022 9:22 am
FM60 W/LiFePo4 Batlleborn -

Last post by raysun « Wed Dec 14, 2022 3:39 pm
Replies: 22
by Off-Grid Organics » Fri Nov 25, 2022 4:08 am

22 Replies

3231 Views

Last post by raysun
Wed Dec 14, 2022 3:39 pm
connecting PV-ve inRAdian wiring box

Last post by raysun « Tue Dec 13, 2022 8:23 am
Replies: 1
by Beechigby » Tue Dec 13, 2022 5:20 am

1 Replies

1681 Views

Last post by raysun
Tue Dec 13, 2022 8:23 am
Status screen

Last post by audrey0485 « Thu Dec 08, 2022 11:49 am
Replies: 10
by audrey0485 » Fri Jul 22, 2022 4:11 am

10 Replies

2002 Views

Last post by audrey0485
Thu Dec 08, 2022 11:49 am
FlexMax 80

Last post by raysun « Thu Dec 01, 2022 2:26 pm
Replies: 1
by kenpino » Thu Dec 01, 2022 11:49 am

1 Replies

1610 Views

Last post by raysun
Thu Dec 01, 2022 2:26 pm
FM80/60 calibration

Last post by raysun « Sat Nov 19, 2022 9:08 am
Replies: 19
by raysun » Mon Aug 17, 2020 10:18 am

19 Replies

4029 Views

Last post by raysun
Sat Nov 19, 2022 9:08 am
Trying to understand the daily stats

Last post by provo « Fri Nov 18, 2022 1:20 pm
Replies: 1
by pioneerMan » Fri Nov 18, 2022 12:35 pm

1 Replies

1673 Views

Last post by provo
Fri Nov 18, 2022 1:20 pm
Power still goes to controllers with breakers off

Last post by raysun « Wed Nov 16, 2022 12:33 pm
Replies: 3
by pioneerMan » Wed Nov 16, 2022 11:21 am

3 Replies

1680 Views

Last post by raysun
Wed Nov 16, 2022 12:33 pm
Can I quiet down the fan?

Last post by unfortunate « Tue Nov 15, 2022 7:48 pm
Replies: 5
by unfortunate » Mon Nov 07, 2022 3:24 pm

5 Replies

1745 Views

Last post by unfortunate
Tue Nov 15, 2022 7:48 pm
Normal to have such a difference in kWH produced?

Last post by raysun « Tue Nov 15, 2022 5:31 pm
Replies: 4
by pioneerMan » Mon Nov 14, 2022 8:46 pm

4 Replies

1667 Views

Last post by raysun
Tue Nov 15, 2022 5:31 pm
Mate doesn't show incoming amps from both charge controllers

Last post by raysun « Fri Nov 11, 2022 1:20 pm
Replies: 4
by pioneerMan » Fri Nov 11, 2022 12:28 pm

4 Replies

1736 Views

Last post by raysun
Fri Nov 11, 2022 1:20 pm
stuck in CHARGED mode , won't go to float.

Last post by raysun « Thu Oct 27, 2022 3:40 pm
Replies: 15
by Schneider_splitphaze » Tue Oct 25, 2022 5:08 pm

15 Replies

1994 Views

Last post by raysun
Thu Oct 27, 2022 3:40 pm
f60 together with a f80

Last post by raysun « Wed Oct 26, 2022 7:01 pm
Replies: 1
by TomMeunier » Tue Oct 25, 2022 10:55 am

1 Replies

1634 Views

Last post by raysun
Wed Oct 26, 2022 7:01 pm
FM-60 AUX SSR DIVERSION mode

Last post by Solarman7122 « Wed Oct 12, 2022 7:02 pm
Replies: 13
by Solarman7122 » Mon Oct 03, 2022 1:43 pm

13 Replies

1946 Views

Last post by Solarman7122
Wed Oct 12, 2022 7:02 pm
disabling float for lifepo4 battery

Last post by raysun « Thu Oct 06, 2022 10:08 am
Replies: 13
by rickdemers » Wed Oct 05, 2022 9:35 am

13 Replies

1918 Views

Last post by raysun
Thu Oct 06, 2022 10:08 am
New FM60 stays in "Charging" when old MX60 is in MPPT

Last post by Martin « Sun Oct 02, 2022 5:27 pm
Replies: 2
by Martin » Sun Oct 02, 2022 3:04 pm

2 Replies

1672 Views

Last post by Martin
Sun Oct 02, 2022 5:27 pm
FM80 issue?

Last post by raysun « Sun Sep 25, 2022 10:27 am
Replies: 13
by Powellct » Thu Sep 22, 2022 8:13 am

13 Replies

1955 Views

Last post by raysun
Sun Sep 25, 2022 10:27 am
fm80 turns off

Last post by raysun « Sat Sep 24, 2022 8:51 am
Replies: 5
by 2500hdhd » Thu Sep 22, 2022 3:57 pm

5 Replies

1750 Views

Last post by raysun
Sat Sep 24, 2022 8:51 am
Monitor app

Last post by raysun « Thu Sep 22, 2022 6:34 pm
Replies: 1
by markinredding » Thu Sep 22, 2022 9:52 am

1 Replies

1654 Views

Last post by raysun
Thu Sep 22, 2022 6:34 pm
confused over absorb time setting

Last post by rickdemers « Thu Sep 22, 2022 6:30 am
Replies: 2
by rickdemers » Wed Sep 21, 2022 11:08 am

2 Replies

1715 Views

Last post by rickdemers
Thu Sep 22, 2022 6:30 am
FM80 zooming to 15.8V in Bulk

Last post by bikemechanic53 « Wed Sep 14, 2022 5:26 pm
Replies: 4
by bikemechanic53 » Wed Sep 14, 2022 12:07 pm

4 Replies

1702 Views

Last post by bikemechanic53
Wed Sep 14, 2022 5:26 pm
Batteries Discharging all day with no load and sunshine

Last post by raysun « Wed Aug 31, 2022 2:13 pm
Replies: 1
by AlanPM » Sat Aug 27, 2022 4:04 pm

1 Replies

1685 Views

Last post by raysun
Wed Aug 31, 2022 2:13 pm
Flexmax 80 to charge 32v marine battery bank, how to?

Last post by raysun « Sun Aug 21, 2022 6:03 pm
Replies: 4
by 32 volt boater » Sun Aug 14, 2022 9:35 pm

4 Replies

1806 Views

Last post by raysun
Sun Aug 21, 2022 6:03 pm
Flexmax60 Beeping

Last post by judson99 « Fri Aug 19, 2022 4:40 pm
Replies: 13
by cabin612 » Tue Jan 18, 2022 12:18 pm

13 Replies

2346 Views

Last post by judson99
Fri Aug 19, 2022 4:40 pm
CC and Mate both showed a wildly incorrect solar reading?

Last post by raysun « Mon Aug 15, 2022 6:50 pm
Replies: 5
by jtzako » Mon Aug 15, 2022 6:10 pm

5 Replies

1783 Views

Last post by raysun
Mon Aug 15, 2022 6:50 pm
Best Practice for disconnecting unused FLEXmax80

Last post by crandal « Thu Aug 11, 2022 11:32 am
Replies: 3
by crandal » Thu Aug 11, 2022 5:58 am

3 Replies

1754 Views

Last post by crandal
Thu Aug 11, 2022 11:32 am
Harbor Freight charge controller

Last post by stonefly4 « Wed Aug 10, 2022 6:42 pm
Replies: 3
by stonefly4 » Wed Aug 10, 2022 7:50 am

3 Replies

1843 Views

Last post by stonefly4
Wed Aug 10, 2022 6:42 pm
FM60 efficiency question?

Last post by raysun « Mon Aug 08, 2022 7:59 pm
Replies: 16
by fast_frank_d » Wed Jul 27, 2022 6:40 pm

16 Replies

2206 Views

Last post by raysun
Mon Aug 08, 2022 7:59 pm
locked out

Last post by windyr1@gmail.com « Thu Aug 04, 2022 2:28 pm
Replies: 6
by robbymax » Wed Oct 13, 2021 12:45 pm

6 Replies

2256 Views

Last post by windyr1@gmail.com
Thu Aug 04, 2022 2:28 pm
overvoltage- cascade component breakdown

Last post by windyr1@gmail.com « Thu Aug 04, 2022 1:56 pm
Replies: 28
by rick .w. » Tue Feb 09, 2021 7:56 am
1

2
28 Replies

5506 Views

Last post by windyr1@gmail.com
Thu Aug 04, 2022 1:56 pm

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