I was able to test my new lithiums today for the first time. Unfotunately, the start battery did not even get a half crank on my SHO before shutting down and I had to put my AGM in to get going. The 3 trolling batteries however performed flawlessly and in 6 hours only used 3% of their charge. My question is my battery did not turn back on until I hooked it to the charger when I got home. Is there a way to turn them back on on the water? Or should they turn back on themselves?
I keep referring to my relion battery because I know what it is supposed to do So on my battery the BMS has a cut off value and a return to service value if met will turn the battery free again. I am guessing you surpassed the maximum drain value while starting. IIRC that value was pretty low. Bob
Try jumping it to another battery that is charged, then turn on your charger. It will probably start charging, after about 30 minutes disconnect the jumpers and see if that gets it charging and complete the charge cycle. If this does not work, try again with a different charger
Thank You Leon Pugh
It immediately turned on when I put it on the charger when I got home. I just want to know how to turn it back on without the charger. I’m guessing I need to try to jump it. When I put it on the charger at home it turned on and went right back to the 83% charge it was at before it turned off.
Contact your manufacturer. Lithium’s are different in that they run at 100% then they instantly die. You might have a bad battery of bad circuit protection device inside the battery.
I'm interested to see if the battery has a defective protection system or if the battery is too small for the demands of the SHO and all of the boats electric systems.
The cranking and system battery is something that needs to be oversized.
I looked through the older threads. Those batteries have a max draw of 30 amps. That is not enough to start the outboard. You will need a suitable battery for starting. Bob
rufus I was going through that old thread carefully an saw you had ordered the 100 AH batteries. That 30 amp max was for a smaller battery someone else ordered. The problem is probably the same though. Depending on your outboard the 100 amp max current may be too low to crank your motor. Still not sure why it didn't reset after the draw was turned off. Hope it keeps working for you.
I think you will need to contact your supplier or find the cutoff amperage in you paperwork. The ratings on the batteries may not be the problem as the BMS can have the cuttoff set different than the ratings.
Last edited by bobcoy; 03-24-2019 at 07:14 AM.
Do you have a lithium battery with a starting profile?
From my reading I believe Lithium Pro is the only one who has a designated starting battery which also allows for higher than 14.7 volts to tolerate the SHO.
It's all in the BMS programming.
Yes, Lithium Pro has a battery designed as a starting battery. M3426P. Small, race-style battery that spins my G2 300 with ease.Originally Posted by friogatto
2018 BassCat Lynx
Mercury 300R
Beautiful Grand Lake
Grove Oklahoma
What battery is this?
Relion has a 100 amp hour lithium battery designed for starting. It’s called RB100-HP. It’s designed to allow higher amp draw for starting the motor. A regular 100 amp rated lithium battery you would use to run a trolling motor won’t work.
Gotta check the specs before you buy.
Butch Derickson
2011 Z521 w/250 hp SHO
Traverse City, Michigan
I contacted my supplier and they are taking care of it. It will be a couple weeks but I can report on the solution when I receive it.
I'm not sure what you are referring to as the "battery turned off and had to turn it back on"? I have Lithium Pro's and there's no switch on them. I was told though that if a Lithium battery is drained in order for it to begin to take a charge it needs to have whatever it is wired to be "turned off" while on the water for the charge to go to the battery. Example is if it's the trolling motor battery the TM must be actually "turned off" or in the case of an Ultrex for example, just flipping the on/off switch on the peddle will not turn it off. It needs to be unplugged as in disconnected from the battery completely or on a manual on/off switch
2013 Allison XB-21 BasSport Pro
2023 Mercury Racing 300R
Bravo FS 30P
ProMax 30P
Referring to the BMS(battery management system) It has values programmed in to prevent battery damage from things like"charging voltage too high or too many amps being drawn, The BMS will stop that source from breaking or shortening useful usefull life of the battery. It should resume as soon as a lower value is detected. Bob
Oh, ok, so it's an internal thing.
2013 Allison XB-21 BasSport Pro
2023 Mercury Racing 300R
Bravo FS 30P
ProMax 30P
They are attached to the battery. Usually integrated on top but it looks like one piece.
Is it something that can be seen?
2013 Allison XB-21 BasSport Pro
2023 Mercury Racing 300R
Bravo FS 30P
ProMax 30P
No it is inside the shell of the battery case
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