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Old 03-24-2007, 11:56 AM   #1
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I read through all of the posts related to this and with this info and what I am experiencing I believe I have a problem.

In the past and until recently I always left the house batteries connected via the Battery AUX switch.

Until recently I was always adding water and the batteries would feel warm. Upon checking with Winnebago and then reading the coach manual I learned that the batteries should be disconnected via the BAT AUX switch.

While this stopped the water loss, I have a concern about maintaining charged batteries and not cooking them anymore.

My Parallax 7445 converter/charger only has on output and no charge wizard function. The 12 volt system is connected in parallel with batteries in normal operation. Without any intelligent charging I presume the batteries are getting cooked.

One of the 12 volt batteries is defective and will not hold a charge very long. I want to replace them both, but I am looking to add some sort of add-on to manage the charging properly and be connected full time.

I added the Battery Minder to handle the chassis battery and it has worked very well. I may wire the system so that the Battery Minder can handle all of the batteries, but I am not sure it can handle both seal and deep cycle batteries.
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Old 03-24-2007, 11:56 AM   #2
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I read through all of the posts related to this and with this info and what I am experiencing I believe I have a problem.

In the past and until recently I always left the house batteries connected via the Battery AUX switch.

Until recently I was always adding water and the batteries would feel warm. Upon checking with Winnebago and then reading the coach manual I learned that the batteries should be disconnected via the BAT AUX switch.

While this stopped the water loss, I have a concern about maintaining charged batteries and not cooking them anymore.

My Parallax 7445 converter/charger only has on output and no charge wizard function. The 12 volt system is connected in parallel with batteries in normal operation. Without any intelligent charging I presume the batteries are getting cooked.

One of the 12 volt batteries is defective and will not hold a charge very long. I want to replace them both, but I am looking to add some sort of add-on to manage the charging properly and be connected full time.

I added the Battery Minder to handle the chassis battery and it has worked very well. I may wire the system so that the Battery Minder can handle all of the batteries, but I am not sure it can handle both seal and deep cycle batteries.
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Old 03-25-2007, 02:18 PM   #3
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I don't know anything about the battery minder, but I had an older 45 am magnetek unit as well. I replaced it with the upgrade 7355RU, from bestconverter.com, it has the three state charger and I have noticed no issues with battery at all.
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Old 03-25-2007, 02:25 PM   #4
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First, get rid of the 7445. On its best day it is a dog. Get a Progressive Dynamics PD9160 and Charge Wizard or a 9260 w/ built in Wiz. Either will babysit your batteries nicely with minimall water loss. It will pay for itself in 3 years with battery life to spare and no hassle for you except monthly water check.
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Old 03-27-2007, 07:20 AM   #5
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by hamguy:
First, get rid of the 7445. On its best day it is a dog. Get a Progressive Dynamics PD9160 and Charge Wizard or a 9260 w/ built in Wiz. Either will babysit your batteries nicely with minimall water loss. It will pay for itself in 3 years with battery life to spare and no hassle for you except monthly water check. </div></BLOCKQUOTE>

I checked into the Progressive Dynamics 9245 (45 amp)which has the included wizard and the mounting dimensions seem to match. I will order one when we get home.
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Old 04-04-2007, 09:25 AM   #6
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Well I could not wait. I ordered the Progressive Dynamics 9245 and installed it yesterday. It has a provision for a add-on device that indicates the status of the charger and battery condition...they sell for about $12.00. The installation was easy and only took 15 minutes. It runs quiet and you cannot hear the fan very much.

The new charger/converter almost immediately began to charge the 2 batteries. Today I disconnected the batteries, measured the voltage which was 12.8 on both. But after 4 hours the one battery had dropped to 11.2 which indicates to me that it has at least one bad cell. The other battery reads 12.6 which is OK.

I'll replace both batteries when we get home.
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Old 04-05-2007, 04:08 AM   #7
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by FLYTYER:
Well I could not wait. I ordered the Progressive Dynamics 9245 and installed it yesterday. It has a provision for a add-on device that indicates the status of the charger and battery condition...they sell for about $12.00. The installation was easy and only took 15 minutes. It runs quiet and you cannot hear the fan very much.

The new charger/converter almost immediately began to charge the 2 batteries. Today I disconnected the batteries, measured the voltage which was 12.8 on both. But after 4 hours the one battery had dropped to 11.2 which indicates to me that it has at least one bad cell. The other battery reads 12.6 which is OK.

I'll replace both batteries when we get home. </div></BLOCKQUOTE>

Was ur converter located under the sink with access obtained by removing a bottom drawer? Did u do the install yourself?
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Old 04-14-2007, 05:00 AM   #8
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by JC2:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by FLYTYER:
Well I could not wait. I ordered the Progressive Dynamics 9245 and installed it yesterday. It has a provision for a add-on device that indicates the status of the charger and battery condition...they sell for about $12.00. The installation was easy and only took 15 minutes. It runs quiet and you cannot hear the fan very much.

The new charger/converter almost immediately began to charge the 2 batteries. Today I disconnected the batteries, measured the voltage which was 12.8 on both. But after 4 hours the one battery had dropped to 11.2 which indicates to me that it has at least one bad cell. The other battery reads 12.6 which is OK.

I'll replace both batteries when we get home. </div></BLOCKQUOTE>

Was ur converter located under the sink with access obtained by removing a bottom drawer? Did u do the install yourself? </div></BLOCKQUOTE>

Yes it is located under the sink. I removed one drawer and a vent cover to gain access to the unit as well as the wire harness. It took about 15 minutes to remove the old one and install the new converter.

I did replace the batteries as well when I got home a few days ago. While it has been only a short time since doing this all seems OK for now the batteries are at 12.8 volts indicating full charge.
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