Dual battery charger advice

[dalcini]

Hi folks,
First boat - purchased used last fall. I'm wet-slipping at a marina this summer and feel I need to install a battery charger. I've read many great posts from folks like @FSH 210 Sport and others on batts and chargers and want to check my plan before moving ahead.

Here's my general plan for a charger install:

• Remove Solar panel (It's dead anyway and I don't know how to properly integrate with a plug-in charger - and plug-in takes priority)
• Victron IP67 charger for each battery
• DVSR switched hot mod

The two FLA batteries that came with the boat (used) still seem healthy, reading 12.5-12.7v. I maintained them over the winter on a small Noco Genius at home.

Some questions I have:

• Is it ok to go with the 7a Victrons to keep the cost down? Mininum time between boat use will be overnight so charge time is not much concern.
• Someday when I'm ready to replace my FLA batteries, I'll probably go with FLA+AGM or AGM+AGM. Does this change the plan for the Victron model at all? (my guess is no).

Any additional comments/advice welcome.

 

[FSH 210 Sport]

Go with the 25A IP67’s… they are worth the money, keep in mind you need 10-13% of the Ah rating of a lead acid battery to properly charge it. The new IP 67’s are highly adjustable from 3A to 25A, having used the 10A or 25A model I would not have any other battery charger. As a fyi, I shared several emails with Interstates tech dept and I was told in writing that their AGM batteries can be charged at 25A as long as voltage does not exceed 14.4 volts.

 

[dalcini]

Thanks @FSH 210 Sport. Another question just occurred to me... I don't see any dual bank chargers in Vicron's IP67 line. If I recall correctly, you have at least 3 installed. How are you handling AC power to all of these? I was hoping to do something clean but hadn't considered the need for multiple plugs.