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battery for my pro

D

dragonguy

Member
Premium Member
Did a search and found a couple old threads on Lithium batterys .
Was wondering what everybody is using, had 3 different sleds with the polaris batt 4013045 and each sled got 2 years then they took a crap. Looking at the yuasa ytx20ch-bs which is the batt replacelots of different one to buy on the net, what is everybody else use.

thanks
 
I started with the YTX12-16 Anti-Gravity battery but have switch to their YTX12-20 for more CCA.

The YTX12 AG batteries will fit in the stock battery box except for the height. These are shorter than the big, heavy stock battery. I used some hi-fax to raise it up. One more thing, the + & - posts are opposite of the OEM battery, I had to make a longer positive cable to use the YTX12 AG battery.

Fire n Ice Performance will soon have a lite weight aluminum battery box that will accommodate the shorter sized batteries as well as the OEM battery.
 
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If you do go with a lithium (lion or lipo)... make sure that it has a built in charge controller.

As far as I can tell most of the lithium batteries do not have charge controllers and the Polaris charging system is not the best in terms of charging voltage stability and current limiting.

Earth-X does have the built in controller... they call it the "BMS" (battery management system) (they are in the same price range as other for comparable batteries)
http://earthxmotorsports.com/shop/

I've looked at the Shorai, Anti-Gravity and Ballistic... and they don't have built in charge controllers as far as I can see.

I know that some members have used different brands and have had success with those brands... but trust me... the charge controller is important... and when you are making the investment in the battery... get the one with the most optimal features for your sled.

Anything that requires a "special" charger when out of the sled...certainly will have a shorter life with the primitive charging system on the PRO... the charging circuit was intended for old school lead-acid batteries that are much more tolerant of poor charging regulation.

Christopher has a couple of good threads going in the Yami section on batteries.

Also... the lighter batteries will often times not be the same case size as the lead-acid in your sled now... you will have to make some spacers to hold it in place (foam or wood is good)

Good luck.
Eric
 
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I just want something that comes out easy when and if the belt blows! Right now it would suck in the backwoods on a cold day!
 
I put a WPS Lithium- lightweight battery- 3.8 lbs- in and it fit's in the battery holder just fine- no spacing required. side to side
More than enough room now to service a QD belt...

It is shorter- (Height) all I did was cut down the factory heat shield with Tin Snips- drill a new hole to the mounting tab and looks just like it should from factory.
It's ( as all are spendy around $180.00)- has a cool LED feature that tells you the % of charge in the battery.

As MH stated about chargers.....this battery does NOT require a charger with a balancer built into the charger to ensure that all the lithium cells are being charged equally, but the WPS batteries have the balancer built into the battery so that you can use any standard charger. Hope that answers your questions!
I do know that it doesn't like the Anti sulfide chargers and states that in the directions..

View attachment 243015

Product Description



Lithium Ion Polymer technology
Extremely lightweight, 50% to 70% lighter than standard batteries
Built-in LED test gauge
Increased cranking amps over lead acid batteries
Fast recharge, can be brought up to 90% charge in within 6 minutes
Easily 6 to 12 times more cycle life compared to lead acid batteries
Long shelf life, up to 1 year before requiring recharging
Can be mounted in any position

Dimensions 6 7/8in. x 3 7/16in. x 5 1/8in.
C.C.A 420
Post Position + Right

Enjoy
S/C
 
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How much weight does this WPS battery save vs. stock?
No big deal on cca, as I always planned to pull start in the am (this is my first e start sled) and then use the key start on and off through the day..
 
Dragonguy,

I am the Director of Motorsports for Speedcell Technologies-- we are a lithium battery manufacturer. I run Speedcell batteries in my Estart Pro RMKs and have since 2010.

Your original question regarding the Yuasa YTX20. That is arguably the best lead acid battery that you can buy. Take that for what it is worth-- as I stated I work for Speedcell Technologies.

If you want to save weight and size, a lithium battery is a great choice-- as long as you understand lithium limitations in a cold weather environment. Lithium electro chemical reactions slow down significantly in temps around 32 degrees F. Once pull started in the morning, lithium batteries will fire your sled all day long.

Mountainhorse is correct that you have to be aware of different charging protocols during the off season. You also need to make sure that you do not have a parasitic draw that will overdischarge your lithium battery. Lead acid is much more robust to overdischarge than lithium-- any lithium battery. If you draw down below 10.5 volts static, you basically have a really expensive paperweight.

MH also mentions the need for proper on sled charging. This is also true, lithium is very sensitive to over voltage. If you send more than 14.8volts to the battery, the individual cells will vent, causing the electrical circuit to be broken in order to stop a thermal runaway (fire) from starting. If a poorly manufactured lithium battery does not vent properly in an over voltage situation, a fire will typically result. Be aware that a lithium fire burns almost as hot as thermite and can get so hot that it can turn the aluminum bulkhead into a source of fuel.

We build batteries for military, industrial, and motorsports applications. We also build for custom applications.
 
For the pro RMK, the EarthX model you want is the ETX36C. Most powerful one you can fit. 405 CCA, 3.8 lbs. 5.9x3.4x4.5 (LxWxH). Think I paid $325.

The EarthX 2.6lb 24C is 270 CCA is underpowered for sled applications.
 
11.5 lbs on the stock battery, charged and with electrolyte up to level. Reg2view.

The stocker ES battery in a PRO is rated at 190 cca.

I know that a Lithium battery has thermal limitations...but the warm up procedure or pull start first thing in the AM is all that is needed.

I see where you are going with capacity to compensate for the low temp initial starts before the underhood warms and the EXT36C still drops 7.5 lbs! If money were not an issue... that battery would be my "go to" for sure.

I would think that you could easily get by with the EXT18 or EXT24 unless you truly need the battery to fire first shot, when dead-cold first in the AM.



.
 
MH - FWIW, I spoke with the owner (and engineer) of EarthX this past year. You may know him, also. He's shy of putting the 24 in sleds now, maybe too many warranty claims, cranking speed below 32F was his concern (I hear you on warm sleds). They also boosted the cold output about 20% in the 2014 sled case sizes. Maybe in response to warranty again and the competition. The electronic management system closed me on EarthX. The WPS looked nice for sleds, too. These are really luxury items in the end. Not that I consider e-start itself a pure luxury anymore, having RMKs with and without and found it pretty practical in some situations, and for the family.
 
Anyone in western Canada (B.C./AB) a dealer for either WPS or the EarthX?
 
mountainhorse said:
If you do go with a lithium (lion or lipo)... make sure that it has a built in charge controller.

As far as I can tell most of the lithium batteries do not have charge controllers and the Polaris charging system is not the best in terms of charging voltage stability and current limiting.

Earth-X does have the built in controller... they call it the "BMS" (battery management system) (they are in the same price range as other for comparable batteries)
http://earthxmotorsports.com/shop/

I've looked at the Shorai, Anti-Gravity and Ballistic... and they don't have built in charge controllers as far as I can see.

I know that some members have used different brands and have had success with those brands... but trust me... the charge controller is important... and when you are making the investment in the battery... get the one with the most optimal features for your sled.

Anything that requires a "special" charger when out of the sled...certainly will have a shorter life with the primitive charging system on the PRO... the charging circuit was intended for old school lead-acid batteries that are much more tolerant of poor charging regulation.

Christopher has a couple of good threads going in the Yami section on batteries.

Also... the lighter batteries will often times not be the same case size as the lead-acid in your sled now... you will have to make some spacers to hold it in place (foam or wood is good)

Good luck.
Eric
Click to expand...

Heed MH's info about lithium batteries WITHOUT the built in charge controller. Here's a pic of my YTX12-20 Anti-Gravity battery that has 3 rides on it. I'm guessing the bulge is from the Pro's charging system providing to much voltage. I have sent a message to Anti-Gravity asking if this is what could cause it.





Can anyone confirm if the WPS Feather-Weight has a charge controller built in????
 
Last edited:
The "bulge" in your anti gravity battery is more than likely a result of the electrolyte being ejected from the cell in an over voltage situation. The easy way to test is to see if the internal electrical connection has been severed. Cylindrical Lithium cells have a vent on the top and bottom to avoid thermal runaway. The bad news is the battery is now junk-- the good news is you didn't start a fire.

If I remember correctly, the WPS battery doesn't have a charge controller per se, they used LEDs under the cover to try and bleed off excess voltage. Not a true BMS or pcb controller. It also uses prismatic cells, like the Shorai, not the best for a sled application-- in my professional opinion.
 
Murph said:
The "bulge" in your anti gravity battery is more than likely a result of the electrolyte being ejected from the cell in an over voltage situation. The easy way to test is to see if the internal electrical connection has been severed. Cylindrical Lithium cells have a vent on the top and bottom to avoid thermal runaway. The bad news is the battery is now junk-- the good news is you didn't start a fire.

If I remember correctly, the WPS battery doesn't have a charge controller per se, they used LEDs under the cover to try and bleed off excess voltage. Not a true BMS or pcb controller. It also uses prismatic cells, like the Shorai, not the best for a sled application-- in my professional opinion.
Click to expand...

Well that just sucks.... I just picked up a WPS battery....
 
Murph said:
The "bulge" in your anti gravity battery is more than likely a result of the electrolyte being ejected from the cell in an over voltage situation. The easy way to test is to see if the internal electrical connection has been severed. Cylindrical Lithium cells have a vent on the top and bottom to avoid thermal runaway. The bad news is the battery is now junk-- the good news is you didn't start a fire.

If I remember correctly, the WPS battery doesn't have a charge controller per se, they used LEDs under the cover to try and bleed off excess voltage. Not a true BMS or pcb controller. It also uses prismatic cells, like the Shorai, not the best for a sled application-- in my professional opinion.
Click to expand...

Thanks, that's what I figured. It's a good thing the starter flex shaft broke requiring me to start looking around under the hood to figure that out.
Now, what does Speed Cell have in regards to a lite weight battery that will handle the so-so Polaris charging system and how much? Your website is not very informative at all.
 
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