Big Battery?
08-15-2008, 06:10 AM
#1
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Big Battery?
My goodness im kinda new to brushless/lipo but man Ive never seen a battery this big. Thunder Power "eXtreme V2" 10S Li-Polymer Battery 25C (37.0V/3850mAh) Im sure its not a rare item or anything, just the biggest Ive seen. lol [sm=wink_smile.gif]
08-15-2008, 11:15 PM
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RE: Big Battery?
ORIGINAL: Got RPM
Hmm, where did you find 8000 mAh cells? The largest capacity cells in common use are 5000 mAh. 32,000mAh/4P=8000mAh per cell.
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12s 4p 32k mah
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08-16-2008, 10:56 PM
#8
RE: Big Battery?
I dissagree, polyquest has 6000mah, which means if enerland makes em, theres prolly more than one company out there with em.
08-16-2008, 11:03 PM
#9
RE: Big Battery?
Max Amps also offers 6000-12 000mAh cells with 8000 being one of there selections. It's been around for a long while.
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08-17-2008, 04:49 AM
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RE: Big Battery?
Over on the Rum Runner Forum most of the guys there are running hpr cats excess of 70 miles an hour, lipos of course running 10s 2p PER MOTOR. That many Mah is pretty common in the big electric area...
08-17-2008, 11:02 AM
#11
RE: Big Battery?
Over on the Rum Runner Forum most of the guys there are running hpr cats excess of 70 miles an hour, lipos of course running 10s 2p PER MOTOR. That many Mah is pretty common in the big electric area...
First off, the reality is that very few of the posters at RRR actually own or run the big 10S boats - and very very few of them run the HPR cats because of their extreme hull cost. I compete against the gas boats in sanctioned races with my 10S2P/9000mAh Stryker cat - but if you notice it has a maximum capacity of 2P/9000 mAh and uses 4500 mAh cells. It is not even legal to run more than 12,000 mAh in 10S NAMBA competition. The poster above claimed he had 32,000 mAh in his 4P boat, and I asked him where he found his 8000 mAh cells. All he has to do is answer. Since he has not answered my question, I assume shenanigans on his part. It is abundantly clear that you guys do not understand LiPo terminology.
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08-17-2008, 01:40 PM
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RE: Big Battery?
Here's a 2s 8000mah 25c pack. I run two of these in my Emaxx.
http://www.maxamps.com/Lipo-8000-74-25C-Pack.htm
http://www.maxamps.com/Lipo-8000-74-25C-Pack.htm
08-17-2008, 09:43 PM
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RE: Big Battery?
J T
Yes we understand LiPo terminology. I am NOT interested in how many cells are P'd with in a pack. I am interested in how many packs are P'd to form an overall capacity. Whether I have a 6000mAh pack worth of 4P (1500mAh/pack) or 1P, it makes NO difference.
BB said 10S4P 32000mAh, perhaps it meant 4 paralleled PACKs. A question that we both knew the answer to before it was asked.
Ryan
Yes we understand LiPo terminology. I am NOT interested in how many cells are P'd with in a pack. I am interested in how many packs are P'd to form an overall capacity. Whether I have a 6000mAh pack worth of 4P (1500mAh/pack) or 1P, it makes NO difference.
BB said 10S4P 32000mAh, perhaps it meant 4 paralleled PACKs. A question that we both knew the answer to before it was asked.
Ryan
08-21-2008, 10:33 PM
#14
RE: Big Battery?
BB said 10S4P 32000mAh, perhaps it meant 4 paralleled PACKs. A question that we both knew the answer to before it was asked.
Yes we understand LiPo terminology.../...Here's a 2s 8000mah 25c pack. I run two of these in my Emaxx.
.
08-21-2008, 11:34 PM
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RE: Big Battery?
ORIGINAL: ryan_t888
It's more like 10s2p
Ryan
It's more like 10s2p
Ryan
All of that is in a 44 inch gas mono hull.
Here's what it looks like: [link=http://homepage.mac.com/wmalvey/Models/PhotoAlbum29.html]Snipers[/link]
That is it's gas cousin along side!!
08-22-2008, 08:26 AM
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RE: Big Battery?
ORIGINAL: Got RPM
Even though you are not interested in how many cells are in a pack, many others are. It makes a big diffrerence in competition - something else you are apparently not interested in.
Even though you are not interested in how many cells are in a pack, many others are. It makes a big diffrerence in competition - something else you are apparently not interested in.
Any how, I do race competitevly. I believe you race under NAMBA and IMPBA. Let me share you something from the NAMBA rule book.
1. POWER SPECIFICATIONS
a) The following motor and cell configurations will be considered official for
electric racing in NAMBA:
M-2 A single .05 motor with brushes, any endbell, ferrite magnets.
Power Limits: 1-4 Ni-chemistry cells are permitted.
N-1 Any ROAR-approved stock .05 motor as defined by current ROAR
parameters. Power Limits: Up to 7.5 Volts nominal, any
chemistry. Maximum of 2 packs in parallel. Maximum capacity of
10,000 mAh.
N-2 Any single motor, any endbell, bearings, and magnets. Power
Limits: Up to 7.5 Volts nominal, any chemistry. Maximum of 2
packs in parallel. Maximum capacity of 10,000 mAh.
O Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 7.6 to 10 Volts nominal, any chemistry.
Maximum of 2 packs in parallel. Maximum capacity of 10,000
mAh.
P Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 10.1 to 15 Volts nominal, any chemistry.
Maximum of 2 packs in parallel. Maximum capacity of 10,000
mAh.
Section # 28
Page # 6
Section Name:
ELECTRIC
Revised 6/30/08
Q Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 15.1 to 22.5 Volts nominal, any chemistry.
Maximum of 2 packs in parallel. Maximum capacity of 10,000
mAh.
S Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 22.6 to 30 Volts nominal, any chemistry.
No limit on paralleling of packs. Maximum capacity of 12,000
mAh.
T Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 30.1 to 40 Volts nominal, any chemistry.
No limit on paralleling of packs. Maximum capacity of 12,000
mAh.
a) The following motor and cell configurations will be considered official for
electric racing in NAMBA:
M-2 A single .05 motor with brushes, any endbell, ferrite magnets.
Power Limits: 1-4 Ni-chemistry cells are permitted.
N-1 Any ROAR-approved stock .05 motor as defined by current ROAR
parameters. Power Limits: Up to 7.5 Volts nominal, any
chemistry. Maximum of 2 packs in parallel. Maximum capacity of
10,000 mAh.
N-2 Any single motor, any endbell, bearings, and magnets. Power
Limits: Up to 7.5 Volts nominal, any chemistry. Maximum of 2
packs in parallel. Maximum capacity of 10,000 mAh.
O Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 7.6 to 10 Volts nominal, any chemistry.
Maximum of 2 packs in parallel. Maximum capacity of 10,000
mAh.
P Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 10.1 to 15 Volts nominal, any chemistry.
Maximum of 2 packs in parallel. Maximum capacity of 10,000
mAh.
Section # 28
Page # 6
Section Name:
ELECTRIC
Revised 6/30/08
Q Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 15.1 to 22.5 Volts nominal, any chemistry.
Maximum of 2 packs in parallel. Maximum capacity of 10,000
mAh.
S Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 22.6 to 30 Volts nominal, any chemistry.
No limit on paralleling of packs. Maximum capacity of 12,000
mAh.
T Any amount and/or size of motors, any endbell, bearings, and
magnets. Power Limits: 30.1 to 40 Volts nominal, any chemistry.
No limit on paralleling of packs. Maximum capacity of 12,000
mAh.
Ryan
