Slingshot Batteries

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Old 01-04-2007, 12:06 PM
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Originally Posted by Casper
Welcome k_bojar. Glad to get some east coast reps! Let us know if there is anything else we can do for you!
thanks Actually curious about trying the EP cells - any special tricks to get them to preform the best?? I'm not sure anyone that I normally race with is using them
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Old 01-04-2007, 12:17 PM
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you back in town Casper?
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Old 01-04-2007, 01:20 PM
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k_bojar-- Treat the EP cells like the IB. Charge them between 6-6.5amps and store them with a charge. They self discharge pretty hard and do not like to be discharged below .9 or so. Do not dead short them as you will just reduce runtime with no significant benefit. You will like these cells. They have incredible punch. They are a more durable cell then the IB's though and we have had better luck with them maintaining top performance longer then the IB cells. When you get them please post your feedback!

James-- I am hoping to leave tomorrow and be back in So Cal by Sat. I hopet to get to the track some time next week. I am having withdrawls!
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Old 01-04-2007, 09:07 PM
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HAY WHEN YOU ALL GOING TO SOCAL
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Old 01-04-2007, 09:40 PM
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Bob--I don't live in Orange County anymore, so not sure when I will get back out again. Hopefully soon though as I have not had any track time for too long. Casper will be back in town in a day or so and he is hoping to get there soon. You and your son must be needing some of the new cells though...
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Old 01-06-2007, 12:36 AM
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Keith, Casper - How many amps should I use to discharge a pack down to a point to put it on the smart tray?
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Old 01-06-2007, 07:44 AM
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James--After racing, I use anywhere between 20-35 amps to discharge the pack down. Heat is the enemy here, so a fan could be in order, but never use the fan during charging. I'm actually using the Much More discharger, so it discharges at 35 amps in pulse mode, so the cells don't get hot. I get the benefits of a high discharge (like race conditions) while keeping the heat down (like a lower discharge amperage). Hope that answers your question... Casper does something similar but doeas not use the Much More unit, so you'll be interested in his practice. He should be back in town today or tomorrow and will surely answer your question....
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Old 01-06-2007, 10:30 AM
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Thanks Keith! I came up on a 30 amp integy reacter discharger and wanted to be sure before I used it. I was concerned about the heat and I'll watch it closely using a fan.
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Old 01-06-2007, 10:32 AM
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Oh by they way..... These EP4200 seem to get better with every charge. LOTS of power through the whole race! Great packs!
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Old 01-06-2007, 05:27 PM
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When I discharge my packs before I charge them I use my chargers. My integy chargers discharge at 20 amps and my much more's discharge at 10 amps. Again heat is the issue. 30 should be fine if you are dumping left over charge but is a little hard if you are discharging a full pack. I do not think the discharge rate is all that important other then it effects the time it takes to take the pack down.

Glad you like the EP cells. We feel these are the next greatest battery pack in R/C. We just need to spread the word that slingshot is the place to get them!
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Old 01-07-2007, 10:08 PM
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YES WE DO NEED TO SAVE THE BUCKS FIRST . FROM THE HOLIDAYS
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Old 01-08-2007, 06:58 AM
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Bob--You know where to find me when you win the lottery.....
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Old 01-08-2007, 10:19 AM
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Keith- wanted to thank you again for Personally delivering our packs and supplies.
I did have a little trouble reading the invoice. But I think I got it.
It looks like maybe you didn't charge us for the batt. boxes?
let me know
Btw, I vaugely remember having this conversation already, but My 18 mo old boys' name is Mason also
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Old 01-08-2007, 11:17 AM
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Anyone lucky enough to get some EP4200's post how you like them, then spread the word. These things are the best kept secret in R/C.
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Old 01-08-2007, 11:56 AM
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Dave--I'll look at the receipt and see what kind of error I probably made.... Thanks for the tip...

In a few years, we'll see which Mason is faster......
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