11.1v Lipo "Run Time"?

[DMitri]

I will be using it in a KWA KM4 RIS, firing .25 bbs.

Sorry, this caught my eye and I just wanted to clarify, since no one else has, that the weight of the round is completely irrelevant to anything having to do with electrical power in an airsoft replica.

[slipstream]

lipos discharge evenly without any falloff, so you wouldn't notice a rate of fire decrease when the battery was discharging. the way i understand it is it will just stop when it's out of juice.

yes that is correct.

[Chachi]

I will be using it in a KWA KM4 RIS, firing .25 bbs.

Sorry, this caught my eye and I just wanted to clarify, since no one else has, that the weight of the round is completely irrelevant to anything having to do with electrical power in an airsoft replica.

Thanks for mentioning that DMitri. I was wondering if that did have anything to do with it, being that it is firing a heavier round versus a .20. Thank you for the info.

[Jester316]

The weight of the round doesn't matter, but the strength of the spring does. It takes more power to pull back an m120 spring then an m90 spring. However, I haven't heard of a Li-Po having trouble pulling any spring.

[Nec]

lipos discharge evenly without any falloff, so you wouldn't notice a rate of fire decrease when the battery was discharging. the way i understand it is it will just stop when it's out of juice.

yes that is correct.

No, No, No, incorrect. Lipos will give a lower ROF when they are about to die. It's like NiMhs you will notice the battery is about to die because of the lower ROF it provides, but unlike NiMh batterys with Li-Polys when you hear that decrease in ROF you need to stop using said battery and charge it. Failure to do so can cause the cells of the battery to "dip" past 3v thus causing permanent damage the cells.

[Nec]

However, I haven't heard of a Li-Po having trouble pulling any spring.

In most cases yes. Lipos provide enough amps to handle most springs, but it depends on said battery's discharge rate. Most Lipos have their discharge ratings listed on the pack itself in "Continuous" (underload) and "Burst" (start-up).

[slipstream]

lipos discharge evenly without any falloff, so you wouldn't notice a rate of fire decrease when the battery was discharging. the way i understand it is it will just stop when it's out of juice.

yes that is correct.

No, No, No, incorrect. Lipos will give a lower ROF when they are about to die. It's like NiMhs you will notice the battery is about to die because of the lower ROF it provides, but unlike NiMh batterys with Li-Polys when you hear that decrease in ROF you need to stop using said battery and charge it. Failure to do so can cause the cells of the battery to "dip" past 3v thus causing permanent damage the cells.

let me correct myself. With airsoft, since you have a motor pulling a stiff spring, when your battery hits "the wall", it will continue to provide power, but just not very much. Thus, it may not be able to turn the motor/spring over giving a "dead" feel. this theory i tested with a 7.4v battery on an m120 spring. This may not occur with an 11.1v battery. YMMV.

[league 4]

The last game I was in I was using a lipo that I couldn't charge and the ROF was very low by the end of it. A 9.6v mini could have gave a better ROF, but when the battery was fully charged, the ROF was really high. The spring was very weak, the gun shot about 310FPS.