New idea for battery replacement save weight

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Update

Update on the Ultra capacitor/Super capacitor.

Ill just call them the Ucap for short.
This test is being done on a 2013 Skidoo Summit. With e start.
Has the stock AGM Doo battery in there. Just in case if anyone was wondering.
The Ucap alone would not start the motor on a cold start. Ucap was charged to 12.3V from the sleds battery, but started no problem with both in parallel.
After about 90 sec of charging(from the magneto) the cap was at 14.5v Unhooked the AGM battery. Sled started just fine with just the Ucap
The Ucap also started the sled 4 times in a row and on the 5th it petered out. But once charged again with motor running took only 60sec to fully charge the Ucap back up to 14.8v
Once the motor stopped the Ucap’s charge was 14.76V so lets say 14.7v
We let the sled sit for 1 hour with just the Ucap on. From Fully charged is was down to 14.05v sled started just fine.
We let it set next for 2 hours with just the Ucap. From Fully charged is was down to 14.28v sled started just fine.
So it seems that a charge of 12.3v in the Ucap is not enough to get to turn over the motor. But 14+V is.

Well keep testing, but two hours seems pretty decent each Ucap does have a mA leaking listing. Im just not sure how or what formula to use to mathematically figure it out. Real world seems to be working for us right now.

Cheers
Allan

https://youtu.be/o78yv12k2Qw
https://youtu.be/zc6nDQ1MQEk

 

[Snail]

Cool


Sent from my iPad using Tapatalk

 

[Teth-Air]

I have been testing a capacitor too. No battery at all. The capacitor starts a 2012 Etec 800, 3 times before needing charging from the lighting coil. We use a 50 Watt resistor to protect the lighting coil from overloading while charging the capacitor. This resistor slows the charging to nearly 20 minutes at idle for a completely drained capacitor but that condition will never likely happen. Early testing on the 2015 Polaris RMK 800 shows it will start at least 2 times in a row too but I am not sure if the capacitor was completely charged.
The packaging for this capacitor is much cleaner than unit in the previous posts as it looks similar to a 1/2 size battery. It also weighs 2.5 lbs with its aluminum case while the Ski-doo battery weighs closer to 15 lbs.

 

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Heres a better picture of one of the units were using. its weight is .75kg

this is the other one, I just put it onto a clear plastic housing.

https://www.amazon.ca/Ultracapacitor-Module-Battery-Eliminator-Starting/dp/B017FZ0M0A/ref=aag_m_pw_dp?_encoding=UTF8&m=AWGOTVCIAJJAB

 

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Another update.
So after the last start last night. Ucaps were charged to full. Sled sat overnight. about 11 hours, 14.4v this morning and started no problem!! Awesome!!
So in a 2S application this is pretty fantastic. But in the 4S the hybrid system with a small AGM is best.

 

[fishstick]

Nice work Allan!!

 

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Well, heres the last report on the system. Our season is done here. Ugh!

We let the Ucap sit for 4 days, it started the sled. Then we let it sit for 5 days. The volts were down to 12.1v just not enough to start the sled. Cold start.
Not bad for what it is. We used a EarthX jump pack to start the sled. All good.

 

[Teth-Air]

Heres a better picture of one of the units were using. its weight is .75kg

this is the other one, I just put it onto a clear plastic housing.

https://www.amazon.ca/Ultracapacitor-Module-Battery-Eliminator-Starting/dp/B017FZ0M0A/ref=aag_m_pw_dp?_encoding=UTF8&m=AWGOTVCIAJJAB

Is yours waterproof?

 

[Teth-Air]

FYI, 9 days and the voltage dropped to 7.8 volts. Way too low to start but this retention greatly reduces charging time after starting with pull starter.

 

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Is yours waterproof?

The eaton one looks to be pretty water prof/resistant. The other one that I put into a plastic box my self is. I know because I totally sealed it up.