Would 8.4V 3600mAh or 4200mAh battery be considered "pushing it" for a stock gun?

[ThunderCactus]

However both elite 7.2v packs have the same ROF as both intellect 8.4v 3600mah packs

[mcguyver]

This was measured on a chrono, or guessed? I don't believe the results, unless you have a bum 8.4v.

[ThunderCactus]

I don't think i could get 2 bad batteries in a row...
There's a different ROF on 1200/1400mah, 2200mah, 3000/3600mah, and 4200/4500mah batteries, so would the only possible explanation be that the 4200 and 4500 cells are bigger than the 3000 and 3600?

[mcguyver]

You are making WAY too many assumptions here, providing virtually no details to back up your assessmnets.

1) What gun was this in? What internals, what motor load?

2) Was this measured or perceived? Perceived results mean shit. What was the actual data? Without a solid number difference, data means shit.

3) How are these batteries constructed? What connection system is used, and who makes the cells?

It's like saying " I raced a Civic with my Mustang, and the Civic beat the Camaro, and the Camaro beat the Celica, and the Celica beat a Ferarri, so I'm faster than a Ferarri!!".

[ThunderCactus]

Hey I've seen a pontiac van beat a camaro before lol
Tested in same gun, measured results, both intellect batteries constructed at factory connected by metal band spot welded 9 times on each terminal, both batteries use the same wiring and the modified battery I cut out one cell and soldered the two bands together. Next time I'm at XT, likely thursday, I'll get them to measure the results, last time I measured was back in early spring when I got the battery. I'll put a post-it on my guncase so I remember lol

[mcguyver]

Make yourself a tester as I described. Then test any kind of battery with any load you like. You can build for about $20.

[mateba]

"metal band spot welded" You mean they spot welded tabs to the battery and then soldered the tab to the next battery? How was the 7.2v constructed, "end to end" ? Did you measure the ROF buy sound?

I'm really curious why your batteries perform that way.

[mcguyver]

It sounds like the cells are "tabbed" with the metal strip and spot-welded at each cell. The most common way to mass-manufacture batteries that I've seen.

[mateba]

yeah, it also creates internal resistance.

[mcguyver]

The better quality the cell interconnection is, the more current can pass. Simple as that.

[mateba]

my point and speculation exactly

[Kos-Mos]

1- 4200mAh Intellect cells ARE fatter than 3000mAh cells. (Mesured. It actually caused a few problems before)

2- Battery Spot welds can allow relatively well up to 40A by spotweld. We used to have the batteries re-weld when we where racing RC cars (the packs came with 4-6 spots, we made them 8) there is a difference.

3- the cells are connected side by side with a metal band, spot weld, then the band is fold so that the cells end up lined

4- I run my Star G36K on a 7.2v 3800mAh pack and the 1400mAh 2/3A can't run it properly (9.6v) A large pack WILL make a difference. Between 3000 and 4200? probalby not enought to consider it in airsoft.

[ThunderCactus]

I measured the 3600, 3000 and 4200mah packs with a vernier caliper, they're all the same size within .040" of eachother, we'll know final results thursday, I'll test the intellect 8.4v 3600, intellect 7.2v 4200, GP 8.4v 3000, and throw in a mini intellect 8.4v 1400 just for giggles since I can run my 249 off it lol

[Kos-Mos]

Do you have cheaper 3000mAh cells?

You only checked high-end cells... I found that some 2000ish Ni-Cd and some cheap 3000mAh Ni-Mh are smaller in diameter. (Checked with Venom 3000's and Tenergy 3800's)

[ThunderCactus]

GP is the 'lowest quality' battery I have and that's just because it came with my G3SG1 lol