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[Chizbi]

I'm running a VFC 416 with stock internals, AMP High torque motor, ASCU Mosfet, and a BOL 11.1v 1800Mah 15C lipo.

The batter is fairly new, maybe 5-6 charges on it.

I'm getting about 3000 rounds per charge. According to guys I play with, they said I should be getting closer to 6-8k rounds.

Is it a bad lipo?
Crappy charger maybe?
Could it be the Mosfet draining power faster?
Or possibly the motor just pulling more power?

[Booligan]

3000 rounds sounds about right for a battery of that size to be honest.

[Chizbi]

3000 rounds sounds about right for a battery of that size to be honest.

Does the 1 mah per shot still apply to lipos?

[Booligan]

Not really, but 2 shots per mAh is about what I normally get with my guns, and you're right around there.

[Chizbi]

Ok, maybe I need to grab one more lipo or just slow down my shooting

Thanks for the help.

[fuzzywuzzy]

It all depends on your setup and can vary with battery brand. I have a 1250mah 20c lipo which gets around 2-2.5k rounds when paired with an element torque motor/m130/18:1 gears. Throw it in a gun with a cheap stock motor and you're probably looking at around 3.5k or more. An 1800mah 20c lipo gets easily over 4k rounds on that same setup w. the element motor.

Try something with a higher output, I'm sure the amp motor can take more than just 27 amps. If you're not maxing out the motor, then your battery is operating at 100% output each time you pull the trigger which is not so efficient.

[XavierMace]

You aren't going to get 6000-8000 rounds out of a 1800mah battery.

[backyardsniper]

is your battery fully charged when you shoot the gun

[nicktheww2fanatic]

I'm running a VFC 416 with stock internals, AMP High torque motor, ASCU Mosfet, and a BOL 11.1v 1800Mah 15C lipo.

The batter is fairly new, maybe 5-6 charges on it.

I'm getting about 3000 rounds per charge. According to guys I play with, they said I should be getting closer to 6-8k rounds.

Is it a bad lipo?
Crappy charger maybe?
Could it be the Mosfet draining power faster?
Or possibly the motor just pulling more power?

backyardsniper, its right there on the original post...each charge means full charge.

[xbeeongx]

I agree with XM and everyone else that seems to think there's nothing wrong with your battery. 3000 rounds per charge doesn't seem bad at all.

1mah per shot is too vague of a generalization, because of the variations of AEG springs out there. But, you can count on batteries with higher discharge rates generally being more efficient for your overall system.

[Chizbi]

But, you can count on batteries with higher discharge rates generally being more efficient for your overall system.

Ahh see I would have thought the opposite.

Good to know!

[Lord Merlin]

Ahh see I would have thought the opposite.

It is simple physics: If you strain your battery it uses more power to generate the output you need.

Let's take an example: I have a 12V 7.2 Ah battery (lead-gel) made for motorcycles and such. It is rated for a maximum output of 43 Amps. If I use a motor that takes up that 43 Amps I will be happy if it can supply 1/4 the nominal charge. Now, if I only use 36 Amps that value will go up to 1/2 Charge. I have a nice little leaflet that specifies about 8-10 draw current strengths and the amount of power that thing can supply at those power levels (the shop gave it to me with the pack).

While a Li-Po will loose less power from being strained it is generally a good idea to have a pack that can supply at least twice the amount of power you think your motor will draw if you plan on shooting a lot.
For your Amp motor (that can easily eat 30-36 Amps) your current Battery can only supply 27 Amps (rating * discharge). Geting an 1800 mAh 20C pack would give your motor 36 Amps. If your setup only draws 30 Amps then it would last a little longer, but if you can draw 36 then it will not make much of a difference.

[xbeeongx]

Ahh see I would have thought the opposite.

Yeah, basically the discharge rate is the maximum current that the cell can provide. It doesn't automatically give 100% with just every / any application. Its like having 1 liter of water available to you every day vs. 5 liters every day. You don't HAVE to drink all 1 or all 5, you're only limited by the total.

[RLB]

3000 rounds sounds about right for a battery of that size to be honest.