[C320-list] totally shot D-4 Batteries

[Chris Burti]

Just a couple of comments.
I typically got seven years or more out of commercial duty 4D’s by keeping them watered and not running them down below 50%. Hard to find true commercial duty batteries because they don’t publish all the construction details, but weight is a key tell…heavier plates  = more cycles. Price for these is far less than AGM’s. (That said, I am running Lifeline AGM 12 v.  8D’s and 6 v. GPL-6CT’s in three banks in our Grand Banks; engine, house and inverter)

At one time I intended to convert Commitment to 4, 6 v. GPL-6CT’s to increase capacity and make them easier to load aboard. To do this, you need a slightly longer battery tray. I had a couple fabricated out of stainless steel for the project, but I never completed the project. I also made an insert to fit the gap behind the wheel in the cockpit seating with swivel post socket insert for at all captain’s chair so that I wouldn’t have cut  a hole in the original Catalina filler. I still have that also.

Anybody willing to pick either of them up is welcome to them.

Best regards,
Chris Burti
Formerly Commitment #867.
Farmville, NC

From: Louis Spitz via C320-list
Sent: Sunday, July 16, 2023 11:19 AM
To: C320-List at Catalina320.com
Cc: Louis Spitz
Subject: [C320-list] totally shot D-4 Batteries

Looking for thoughts on replacing vs. changing systems on my 1995  #195.
There are so many new battery technologies that I’m ovewhelmed.  I’d like to hear experiences from folks who went down these paths.
Thanks.
Louis Spitz
‘Merry Chase’
1995  #195.