danny i have an smc 5200 pack that the hard case keeps comming apart on the last time it came apart was last weekend in my t-4 and it cracked the case. is there any way i can get a new case for it or can i send it in to have the case replaced? Rich at Dee and Mee hobbies here in Topeka said smc has an incredible customer service so i am hopping you can do something for me. the battery is less than a month old.
thank you for any help you can offer
Robert
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Right now I am running 2S 15C 4000mAh with a CC Mamba Max & 5700kV in a AE T4. I used the same batteries in my Slash for spec racing. The T4 is too stupid fast even with 15C batteries, the Slash could use a bit more juice. I borrowed some Losi 20C batteries and the punch in the Slash was much better.
My question is this. What if anything would I gain with a 35-40C battery over a 20-25C battery? The T4 isn't even in the equation because it's too fast at 15C. But for the Slash, I don't think the ESC can take advantage of such a high C rating. So in this case would opting for the much cheaper 25 or 28C betters be an adequate option? I just want something better than my current 15C batteries. 40C 200A capability seems like overkill for me.
Where you will see the biggest difference is in cycle life. The higher C rate batteries are made with a better quality of raw material which not only has a performance benefit, but a longevity benefit as well. Essentially, the battery is "loafing" along so it is not stressed and it will last longer. It runs cooler too,which is less stressful to the pack.
Danny, how many cells is that 5200 40C pack? Was that a TP style balance plug on there?
I'd love to try out one of your 4S packs for my LST conversion. Any plans for 5 or 6 cell packs?
Our 5200/40C is 2S2P and the balance connector we use is the JST-XH as the TP style connector has that little locking clip that can break.
If you need to convert to a TP connector there are adpaters out there and we will have some soon.
We will have a softcase 4S/5000/40C+ with 10 gauge wires and JST-XH connectors. Were also releasing some flight packs so we will have 5 and 6S packs for the flight market. Those will have the TP balance connectors.
danny i have an smc 5200 pack that the hard case keeps comming apart on the last time it came apart was last weekend in my t-4 and it cracked the case. is there any way i can get a new case for it or can i send it in to have the case replaced? Rich at Dee and Mee hobbies here in Topeka said smc has an incredible customer service so i am hopping you can do something for me. the battery is less than a month old.
thank you for any help you can offer
Robert
The first shipment of 24C/5200 used a different glue and it doesn't seem like it was very good. You can apply a small amount of CA to glue it well.
If your case is badly cracked we can try to replace it but I will need to ask for some extra cases as everything is assembled by our supplier.
Right now I am running 2S 15C 4000mAh with a CC Mamba Max & 5700kV in a AE T4. I used the same batteries in my Slash for spec racing. The T4 is too stupid fast even with 15C batteries, the Slash could use a bit more juice. I borrowed some Losi 20C batteries and the punch in the Slash was much better.
My question is this. What if anything would I gain with a 35-40C battery over a 20-25C battery? The T4 isn't even in the equation because it's too fast at 15C. But for the Slash, I don't think the ESC can take advantage of such a high C rating. So in this case would opting for the much cheaper 25 or 28C betters be an adequate option? I just want something better than my current 15C batteries. 40C 200A capability seems like overkill for me.
Jack is correct about the cycle life being better with higher C rate but there is also another advanatge to higher C rate. One of them is the pack will have lower IR which means under load it will not drop as much so your Slash will have more punch and will go faster.
Awhile ago I compared one of our 25C/2200/3S flight packs to or soon to be released 40C+/2200/3S pack.
When doing a 10C (22 amp) discharge on the packs I got the following IR and average voltage.
25C: 19.8 IR 10.96 average voltage.
40C: 15.1 IR 11.08
I then set my GFX at it's max setting which is 35 amps (15.9 C) and got the following results.
25C: 17.3 IR 10.68 voltage
40C: 13.9 IR 10.96 voltage
As you can see the voltage drop is much higher when the resistance is higher. The difference between one of our 28C car packs and 40C car packs will not be as big as the IR difference between both is less.
I got confirmation today that our new E-Revo pack will be 28C+/9000 at the same size and price as posted in my first post.
The 11.1v/5500 needs to be confirmed and it will take a few weeks to get this confirmation but we know the C rate will be 28C+ but were waiting on the exact capacity which we think will be a bit higher than 5500.
I will be in the market for both E-Revo packs.
I also one a Losi XXX-CR so i am looking for a smaller 11.1 pack as well.
The question is, wy is the 3400mAh 11.1V 18C Hardcase pack only 18C?
This pack is the perfect size for me, but 3.4 X 18 is 61.2A X 11.1V is 679Watt.
Were releasing this pack at 18C to keep price down. Higher C rate costs more. We also know that many of the so called 20C packs currently out on the market are actually 15C and they seem to be popular.
We will most likely release a 28C+ pack eventually. We need to figure out if we need to do it in a Hardcase or softcase as that really changes the capacity of the pack.
If there is more room in de batt tray, there is a lot more options out there,
But in the Losi and Asso buggy and truggy there is just 25mm to work with.
When it would be in 28C+ it will probably be higher...?
Higher C rate comes at the expense of capacity so it will not be higher than 3400. If we make it a softcase pack we can increase capacity as the height of the cell is the most important to it's capacity.
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