siwash Posted May 17 Author Report Share Posted May 17 Curious - can these batteries (doesn't matter what AH) be charged say if you're on a 3 or 4 day trip (back country) with a solar panel or some other charging system? Link to comment Share on other sites More sharing options...
CrowMan Posted May 17 Report Share Posted May 17 Yes...a lot folks use lithiums for off- grid camping/RV's. The solar panels would be fairly substantial though. However, a generator will certainly work. 1 Link to comment Share on other sites More sharing options...
AKRISONER Posted May 17 Report Share Posted May 17 (edited) 6 hours ago, CrowMan said: You won't regret spending a few more $ if your main motor quits and you need to limp back to port with the TM. Speaking from experience. Blew up my lower end in October while in snug harbour on Georgian bay during a wind storm…hour and a half on the trolling motor on top speed …the 2 group 31’s were fried but god was I happy to make it safety. Edited May 17 by AKRISONER 1 Link to comment Share on other sites More sharing options...
siwash Posted May 17 Author Report Share Posted May 17 Good info guys thanks. Just came across a 24 with 60 AH How much difference does 10 AH make? My guess not much? Link to comment Share on other sites More sharing options...
BillM Posted May 17 Report Share Posted May 17 RE: Charging when offgrid. Get a small generator like a Yamaha or Honda and hook it up to the onboard charger and run it at night. Solar isn't going to make a dent, and usually you want to charge at night. 1 Link to comment Share on other sites More sharing options...
siwash Posted May 17 Author Report Share Posted May 17 Doesn't surprise me. Solar, wind, electric cars. All garbage 1 Link to comment Share on other sites More sharing options...
siwash Posted May 26 Author Report Share Posted May 26 I ended up buying a 100 AH DC House lithium. So what is the protocol when charging? Can these batteries be charged even if not fully discharged? What are the dos and donts? thanks! Link to comment Share on other sites More sharing options...
Terry Posted May 26 Report Share Posted May 26 Buy a charger that is meant for lithium batteries and charge it every time you come off the water 1 Link to comment Share on other sites More sharing options...
siwash Posted May 26 Author Report Share Posted May 26 The charger I've been using for my regular batteries has an option to charge lithiums. Assuming not trickle charging? Link to comment Share on other sites More sharing options...
CrowMan Posted May 26 Report Share Posted May 26 Yes, dont trickle charge lithiums...the faster you charge them, the longer they last. If you don't have a lithium specific charger, the battery will only charge to 60% or so of capacity. Lithiums need a higher voltage to fully charge. Assuming your lithium has a BMS built-in...it should automatically monitor and prevent over-charging, over discharging, and charging at sub-zero temps. Link to comment Share on other sites More sharing options...
CrowMan Posted May 26 Report Share Posted May 26 (edited) Also, I find a Bluetooth monitor very useful. You can quickly check the status of your battery from your phone. Not sure if your battery has it built-in, but you can add it on for $30 Edited May 26 by CrowMan Link to comment Share on other sites More sharing options...
siwash Posted May 26 Author Report Share Posted May 26 What is BMS? tge charger I have is a multiple-battery charger. It's an inexpensive charger I got on Amazon so probably not up to the task. One more thing to buy! Link to comment Share on other sites More sharing options...
CrowMan Posted May 26 Report Share Posted May 26 "Battery Management System". It's an electronic system built in to the battery that monitors voltage, current, and temperature. It prevents overcharging or short circuits, etc. Keeps the battery from blowing up on you and ensures that you get the best longevity. ..makes it kind of "idiot proof". Even the most basic of lithiums should have it... Check the specs on your charger vs the charging requirements of your battery...you might be OK Link to comment Share on other sites More sharing options...
siwash Posted May 26 Author Report Share Posted May 26 There's a charging option "LifePO4" Link to comment Share on other sites More sharing options...
Terry Posted May 26 Report Share Posted May 26 That’s the one 1 Link to comment Share on other sites More sharing options...
siwash Posted June 4 Author Report Share Posted June 4 (edited) Charged it a few days ago. Took many hours. As in the whole night! Is this normal? Edited June 4 by siwash Link to comment Share on other sites More sharing options...
CrowMan Posted June 4 Report Share Posted June 4 1 hour ago, siwash said: Charged it a few days ago. Took many hours. As in the whole night! Is this normal? What is the output of your charger in amps when you put it in Lithium mode ? Check the charging requirements of your battery vs your charger. Yours is a 24v 100 amp battery ? Can your charger operate at 24v ? Lithiums typically charge at a higher voltage to maximize battery life. You may need a dedicated charger. Link to comment Share on other sites More sharing options...
siwash Posted June 5 Author Report Share Posted June 5 (edited) Yes, a 24 V 100... I'll need to check in the morning to answer your first question. I guess I can get away with it for now.. Leaving for a trip on Friday to the Sag (Port Loring). Won't have time to buy a charger. Thanks! I think it can operate at 24V. Does it seem like it took too long? Edited June 5 by siwash Link to comment Share on other sites More sharing options...
BillM Posted Monday at 04:10 PM Report Share Posted Monday at 04:10 PM Depends on how many amps that charger is putting out. Link to comment Share on other sites More sharing options...
AKRISONER Posted Monday at 06:12 PM Report Share Posted Monday at 06:12 PM considering the investment in batteries we all make, im going to recommend a Noco genius for anyone putting an onboard charger in their boat. My assumption is that siwash is using just an amazon battery charger that has a lithium option...I have one for my ice fishing battery and it takes all night to charge, they arent made for charging big 100AH lithiums. They are designed for <24AH batteries. Link to comment Share on other sites More sharing options...
siwash Posted Tuesday at 01:50 AM Author Report Share Posted Tuesday at 01:50 AM (edited) Yup an Amazon buy... the super long charge was the first charge. Just came back from my trip and charged it up at the end of each day. Much faster charges. charger is putting out 20 A. On another Note, the terrova has been a blast. I'm so happy with the purchase. Feel much more in control. And the shaft length is not an issue at all. We were battling nasty wind and motor chugging all no problem Edited Tuesday at 01:52 AM by siwash Link to comment Share on other sites More sharing options...
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