Charging Lithium with Verado

[stosiak]

I have a Verado 250HP serial # 3B137985 that is powered by a 31 series AGM battery. I have a lithium 125amp house battery just for my electronics. I have 3 lithium 100 amps for the trolling motor. I have a 4 bank charger that just charges the 4 lithium batteries. What I'm running into is the electronics pull down the house battery more than the trolling motor batteries so when I get done with 2 days of fishing the house is at 40% and the trolling batteries are sometimes at 70-80%. I would like to have the Verado charge the house battery while running spot to spot. Any recommendations on the equipment that is needed and if charging lithium will the Verado is permitted. Thanks in advance

[EuropeanAM]

The ONLY way I would attempt this would be to use an ACR or better yet, a Battery Isolator.

[Redngoo]

Not a verado. But I installed a battery isolator on my opti. Set up just as you got agm/lithum. Set up just as Don has suggested. Mine has worked perfectly!

[Bluzharp]

The Yandina Combiner works great. I have the exact setup with grp 31agm on the motor and a lithium for the electronics. The batteries are combined when charging and isolated when not. I have the lithium version. Works like a champ.

[rangerranger]

Forgive my question but what is an ACR? Does the Yandina Combiner fall in that category?

[EuropeanAM]

Automatic Charge Relay (or Automatic Charging Relay).

Similar to the Yandina- I don't recommend this type of unit as it doesn't actually isolate the batteries (does just the opposite).

[dls]

2020 Mercury Pro XS Ser. #2B743128
I may try this set up in the near future. What brand Battery Isolator do you recommend ? Will this hurt my Mercury in any way ?

[bloodman]

2020 Mercury Pro XS Ser. #2B743128
I may try this set up in the near future. What brand Battery Isolator do you recommend ? Will this hurt my Mercury in any way ?

I have run my AGM in parallel with my Ionic 125 for many hours. Isolator splits charge but the batteries are parallel. Its an awesome setup that my verado and pro kicker can both charge. Dont worry...be happy. I am.
I know you hear lots a stuff about lithiums but its really got to do with the BMS. Ionic obviously has it figured out whether alternator or stator charge.

[DoctorJJ]

2020 Mercury Pro XS Ser. #2B743128
I may try this set up in the near future. What brand Battery Isolator do you recommend ? Will this hurt my Mercury in any way ?

I posed this question to Don in a PM because I didn’t want to derail a thread but maybe if he can answer here, it will help others. What research I had done led me to a Victron Energy Argo FET but I haven’t actually tried it yet.

[1BADAIR]

What about a dual pro BOS on the lithiums

[EuropeanAM]

2020 Mercury Pro XS Ser. #2B743128
I may try this set up in the near future. What brand Battery Isolator do you recommend ? Will this hurt my Mercury in any way ?

Mercury offers isolators and the various cables, as well as the retrofitted fusible link lead from the engine. These are usually made up "Custom to Fit" for a particular boat/engine application.

[dls]

Thanks everyone