bitten192 Posted November 22, 2017 Report Share Posted November 22, 2017 I have an aging Shorai LFX18 battery in my REMOS. I'm thinking about replacing it with a Shorai LFX36 which will fit in the original battery box. What's the down side (other than cost and weight) with putting in a higher rated battery? Would there be a problem with the Rotax charging system? Link to comment Share on other sites More sharing options...
Roger Lee Posted November 22, 2017 Report Share Posted November 22, 2017 No issue. The battery may have more cranking amps, but the voltage is the same. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted November 29, 2017 Report Share Posted November 29, 2017 I thought about replacing my Odyssey with a Shorai for weight, but it only saves around 3lb and adds about $200 to battery cost IIRC. EDIT: I stand corrected, a Shorai LFX18L2-BS06 battery is slightly smaller than the PC310 in all dimensions, 3lb less, and $109.99 direct from Shorai, so cheaper than a PC310. Also 270 CCA vs 100 for the PC310. I might have to seriously look into this next time I need a battery. Link to comment Share on other sites More sharing options...
Runtoeat Posted November 29, 2017 Report Share Posted November 29, 2017 Lithium batteries are amazing. A lot of the new lithium batteries now have current control for each individual cell. Not sure if Shorai batteries have this? This is good to have for regulation of the charging and discharging with the standard chargers and charging systems in cars/airplanes. Link to comment Share on other sites More sharing options...
Anticept Posted November 29, 2017 Report Share Posted November 29, 2017 If you use a ground power charger, you need to make sure it isn't one that applies a continuous charge and does not overvolt the battery or it will destroy it quickly. If you can find a charger that only tops the battery at 85% charge too, it will last a LOT longer. Also, lithium batteries do not cope with extreme temperature well. Temps above 86F shortens the life. The Shorai batteries ship with foam spacers apparently, so that's nice. They do also have their own charger, but it needs a specialized connector. You don't need to use this all the time, but it does balance the cells which is strongly recommended to do once in a while for longevity. Link to comment Share on other sites More sharing options...
Runtoeat Posted November 30, 2017 Report Share Posted November 30, 2017 This is what I was refering to. These batteries contain their own battery management system. No special lithium chargers, charging methods or special connectors are required for balancing the cells . I use this one for my boat. https://www.batterystuff.com/batteries/ssb12q-fp.html Link to comment Share on other sites More sharing options...
Anticept Posted November 30, 2017 Report Share Posted November 30, 2017 I saw that too, and was trying to find specs on it. That's how it should be done! That said, there's this line... "*Warranty applies ONLY to vehicles listed below. As per manufacturer, ALL other use will void battery warranty." Link to comment Share on other sites More sharing options...
Runtoeat Posted November 30, 2017 Report Share Posted November 30, 2017 Hmmm, let me guess, no aircraft listed? This battery manufacturer must use the same lawyers as the manufacturer of our NGK spark plugs. This would fit in our CTSW with some small spacers for length and width and would be about 1.25" higher but I don't recall any components being above the battery to cause interference. If this fits, I wonder if FD would issue a LOA to use this? It is proven for use in rough environments such as scooters and motorcycles. 3 times CCA over the Odyssey while saving 4 pounds weight. Link to comment Share on other sites More sharing options...
Tom Baker Posted November 30, 2017 Report Share Posted November 30, 2017 The battery box would have to be modified. It confines the battery in all 3 axis. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted November 30, 2017 Report Share Posted November 30, 2017 16 minutes ago, Tom Baker said: The battery box would have to be modified. It confines the battery in all 3 axis. The Shorai LFX18L2-BS06 I mentioned is smaller in all dimensions than the Odyssey. You'd probably just need to put some spacers in the box to keep it from shifting around. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted November 30, 2017 Report Share Posted November 30, 2017 BTW, anybody who goes Lithium should be looking at Lithium IRON (LiFe/LiFePo) batteries, and NOT Lithium ION batteries. They are different chemistries; the latter are prone to overheating and are a fire hazard in an aircraft application. Link to comment Share on other sites More sharing options...
Runtoeat Posted November 30, 2017 Report Share Posted November 30, 2017 Specs for the one I posted link to is LiFePO. I was thinking about the box but didn't remember there was a top to it. How about the box for the PC680? The specs for PC680 say 7.27 x 3.1 x 7.6. If this box fits all CT's, it could hold an even bigger lithium battery with huge reserve and CCA compared to the PC310 and still probably weigh 4 to 5 lbs less than the PC310. Specs for PC680 shows 15 lb. Weight savings would probably over 10 lbs going from Odyssey PC860 to lithium. Think there's a possibility FD would approve a LOA for this? Link to comment Share on other sites More sharing options...
Philip Welsch Posted November 30, 2017 Report Share Posted November 30, 2017 The BS06 is a 6v battery isn't it? The BS12 is somewhat larger. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted December 1, 2017 Report Share Posted December 1, 2017 2 hours ago, Philip Welsch said: The BS06 is a 6v battery isn't it? The BS12 is somewhat larger. Good catch, you are right. The LFX14A2-BS12 looks to be a good 12v battery that should fit. Link to comment Share on other sites More sharing options...
Runtoeat Posted December 2, 2017 Report Share Posted December 2, 2017 The LFX14A2-BS12 would be a good choice. Here's a Scorpion LiFePo4 that is slightly smaller than the PC310 in all dimensions. On-board charge management to maintain cell balance with voltage test button, 1.15 lb. No sales tax and free shipping. $99. Interesting chart comparison with Shorai. Hard to believe that this lithium battery has over twice the CCA of the Odyssey and only weighs 1.15 lbs., which appears to be a little more than 4.5 lb. save over the PC310 https://www.batterystuff.com/batteries/lithium-iron-batteries/scorpion-stinger-12v-ytz5s-motorcycle-atv-scooter-powersport-replacement-battery-sstz5s.html Link to comment Share on other sites More sharing options...
Anticept Posted December 3, 2017 Report Share Posted December 3, 2017 Lithium doesn't suffer from the same internal resistances that lead acid does. Link to comment Share on other sites More sharing options...
Roger Posted December 3, 2017 Report Share Posted December 3, 2017 Can you store this battery on your shelf for future use, or does it require regular charging and in any case deteriorate over time ? Would be nice to have a spare just in case ! Link to comment Share on other sites More sharing options...
Runtoeat Posted December 3, 2017 Report Share Posted December 3, 2017 Good question. Not sure about the shelf life of the LiFePo but standard lithium's have extremely good shelf life. Link to comment Share on other sites More sharing options...
Anticept Posted December 11, 2017 Report Share Posted December 11, 2017 Lithium iron phosphate suffers only one real drawbacks: cost. Outside of that, it is better than lead acid in every way, including shelf life. Link to comment Share on other sites More sharing options...
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