Other has anyone seen the 2 lb, lithium battery for watercraft?

extreemthrottle

extreemthrottle

freeride junkie
Location
north palm beach
o.k. stumbled across this the other day, a bit pricey, but very slick! weighing in a 2.12 lbs, with 270 cca! two year warranty!
this is a quote from the website about how long they will last
" Under the worst conditions, a lead acid battery may last only a few weeks and under the best about seven years (top-quality brands with regular use). In between you will find a wide variety of user experiences. Our research indicates an average of about 2 1/2 to 3 years lifespan for lead-acid. Under the same average usage conditions, we expect Shorai LFX to last roughly double, or 5 to 6 years. Under ideal usage and storage conditions, we expect 8 to 10 years to be achievable. Due to their lack of sulfation and slow-self discharge, Shorai LFX increase battery life most for users who sometimes store their vehicles for weeks or months at a time, and don't want to or can't use a battery tender. "


here is the link
http://www.shoraipower.com/p-157-lfx18l1-bs12.aspx
187.00
 
BoatBuoy

BoatBuoy

Location
Bournemouth, UK
Those carbon ones in the Rickters would've probably been a more convertional AGM type under the skin, AGM is generally the best technology to go for at the moment..

These Li-ion batteries have been around for a few years now, the main restriction with them is they require a fairly comprehensive charging system that at minimum uses a 3 or 4 stage charging program, something our ski's are not able to provide...if you run TL and charge at home then no problem...

Their claims about lasting longer are all pretty true, Li-ion batteries have electronics inside to control the charge/discharge of the cells, the electronics usually cut off the power when the battery reaches 20% SOC, most normal (lead acid/gel/amg) batteries would be pretty knackered if you keep taking them down that low! Li-ion also has no memory unlike other types...all in all a great technology!

I can't speak for this particular brand because I've had nothing to do with them, but the Li-ion batteries I have used in other applications are fantastic! To be honest I'd be a little wary of these considering they're so cheap for Li-ion, usually they are soo unbelievably expensive no one buys them...but that'll change in the next few years!
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
A dedicated charge controller with auto shutoff.
Over-discharging them kills them.
Overcharging them kills them and possibly sets them on fire.
 
kevbo

kevbo

Location
dfw
The owner of Killacycle (the 7 sec electric drag bike) told me that A123 batteries are half the weight of the best AGM. You would be looking at $200+ and need the proper charging system for a 4-5LB battery. More weight may be saved if you skimped on capacity. I could not find any nicad cells light enough or cheap enough to replace a common AGM although they could survive very rough handling.
 
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