Author Topic: Upgrading from AGM GPL-8DL to Li batteries  (Read 722 times)

0 Members and 1 Guest are viewing this topic.

lacharrette

  • Newbie
  • *
  • Posts: 3
Re: Upgrading from AGM GPL-8DL to Li batteries
« Reply #7 on: May 05, 2023, 02:01:21 PM »
Thanks to all. Very helpful insights.
The reason I thought you had to change the wiring is because someone told me that I had to. Glad to see that this is not the case.
Best.
Peter

Ambition

  • Full Member
  • ***
  • Posts: 190
Re: Upgrading from AGM GPL-8DL to Li batteries
« Reply #6 on: May 05, 2023, 12:01:42 PM »
Peter,
Ambition is a 2002 Hylas 46 and we recently completed a full conversion of our OEM battery, charging and inverting system from AGM to a mix of AGM and LiFePO4. I would be pleased to discuss the journey our decision to covert along with some of the reasons for the decisons. This was quite the learning experience!
If you send me a PM with your phone number I will gladly call you and we can discuss Ambitions new setup.

Merrill Mant
S/V Ambition
H46 #40

jt11791

  • Jr. Member
  • **
  • Posts: 93
    • Renegade's cruising blog
Re: Upgrading from AGM GPL-8DL to Li batteries
« Reply #5 on: May 05, 2023, 07:31:29 AM »
I made this conversion a couple of years ago.  I didnt change any wiring, just reprogrammed my charging sources, alternator, solar, and A/C chargers.  Its been a great upgrade.  We live aboard fulltime and this has been some of the  best money spent.  What makes you worry that wiring needs to be changed?  Most AGM batteries can output more current than LiFePos and the AGMs take more current while charging so your cables are already large enough.
Jeff Taylor
S/Y Renegade  H54-19

joel

  • Hero Member
  • *****
  • Posts: 563
Re: Upgrading from AGM GPL-8DL to Li batteries
« Reply #4 on: May 04, 2023, 03:27:56 PM »
Peter,

I had a standard alternator with internal regulator.  If you have an external regulator it is probably programmable.  I did not have to change other wiring except for the inverter.

Check your insurance policy.  Some still exclude coverage for lithiums, and Gowrie requires that they be US batteries installed by a pro.

Joel

lacharrette

  • Newbie
  • *
  • Posts: 3
Re: Upgrading from AGM GPL-8DL to Li batteries
« Reply #3 on: May 03, 2023, 11:47:43 PM »
Hi Joel
Thanks for getting back.
Did you replace the wiring and why did you replace the alternator? I ask this because I have recently updated my alternator with a new Balmar alternator and wondered if I could keep that and install a new voltage regulator - if needed.
best.
Peter

joel

  • Hero Member
  • *****
  • Posts: 563
Re: Upgrading from AGM GPL-8DL to Li batteries
« Reply #2 on: May 03, 2023, 04:52:16 PM »
Peter,

I replaced the old battery charger, alternator and regulator and added an inverter.
Joel
S/V Rule One
49 #5

lacharrette

  • Newbie
  • *
  • Posts: 3
Upgrading from AGM GPL-8DL to Li batteries
« Reply #1 on: May 03, 2023, 03:58:27 PM »
Hello all
I have a 2003 Hylas 46. am considering upgrading my house batteries from AGM GPL-8DL to Li. I am at the beginning of my research and am unable to determine what wiring I need to replace. What wiring have other owners replaced when converting from AGM to Li.
Thanks.
Peter Lockwood

 

If you wish to help keep the HYOA running, please click the donation button below