Parallax series 7300 converter question

It is single stage at 13.6 - 13.8
It can stay plugged in except in very hot weather

Thank you. But really if its a signal stage, wouldn't it eventually cook the batteries in a few weeks or so no matter the weather? I guess I'm confused.

YES 13.6VDC will start causing the battery cells to boil out fluids over time. 13.2VDC on the other hand will not. The benefit is keep the batteries charged on my single mode converter/charger so I left mine connected and always checked the fluid levels every couple of weeks and refill them when they started dropping the level..

Now that I have a modern multi-stage charging system out of habit I still check my battery fluids hehe...

My more modern converter/charger actually takes care of my batteries without too much effort on my part... Your friend would do better changing that unit out for a multi-stage converter/charger unit.

Roy Ken

That was what came in my RV. You are right, it will cook the batteries. I had a Parallax 7345. It took about 3 years for me to decide to pull it out and replace it with a real 3 stage converter. I got a Progressive Dynamics PD4655V. I am not sorry. I also upgraded my wiring from the converter to the batteries from the original 8g to 4g.

That Parallax junk will kill your batteries if you don't keep an eagle eye on the water levels.

KATOOM wrote:
Thank you. But really if its a signal stage, wouldn't it eventually cook the batteries in a few weeks or so no matter the weather? I guess I'm confused.

Temperature compensation correction needs to be applied. Proper float voltage at 80F is 13.2, but at 50F it is 13.8

When it is very cold your float voltage should be over 14. So the 7300 does just fine at 13.8 in many climates. When it gets hot out, just check the battery water more often. No big deal.

BFL X2

The batteries will "cook" quicker with an aggressive 3-stage converter (or solar charge controller) than the Parallex. It's up to the user to add battery water. The batteries will be fine if water is added 2 or 3 times a year.

KATOOM wrote:
Thank you. But really if its a signal stage, wouldn't it eventually cook the batteries in a few weeks or so no matter the weather? I guess I'm confused.

Mine almost cooked my new battery in a few weeks our first trip out.

JiminDenver wrote:
Mine almost cooked my new battery in a few weeks our first trip out.

Mine works well for floating and for when on shore power, but it ruined my "learner" first set of batteries (pair of 6s) by not being able to get their SG's up into the "green" so they got sulphated.

I discovered Vector chargers and joined this forum but it was too late for those 6s :( I got a few more years out of them, but they died young. RIP, Learner Set.

KATOOM wrote:
I was wondering if anyone knew off the top of their head if the Parallax series 7300 convertor is a three stage unit? I have a family member with this converter and isnt sure if the trailer can remain plugged it during storage without harming the batteries. Thanks.

7300 is single stage
7300T(For Timer)is a Timed 2 stage

Progressive Dyanmics Intella Power 4600 upgrades them (Replaces only the converter module) best converters.