Lithium-Ion battery?

[mcurcio1989]

Originally Posted by puddinboo

I have drills with the lithium batteries and if I leave them in the work van over night in -20c weather they will be totally dead untill they warm up , also with the lithium battery they keep full charge all the time and then they completely dye with no sign of getting week. In my opinion I would stay away from lithium in a vehicle ,thats my 2 cents.

The voltage on the battery does not just drop off immediately it is a protection on the battery. So once the voltage drops to a certain point it will shut off to prevent it from discharging itself to a point that would cause damage over time. I really do not think this would be an issue in a car. Your not just fully discharging your battery all the time anyways like you try to with an Li ion battery.

That said I would never spend that much money on a battery. It just isn't that big of a deal. I rarely keep a vehicle long enough to justify this anyways.

[puddinboo]

I don`t have the power indicator on my rigid drill .

[puddinboo]

Originally Posted by mcurcio1989

The voltage on the battery does not just drop off immediately it is a protection on the battery. So once the voltage drops to a certain point it will shut off to prevent it from discharging itself to a point that would cause damage over time. I really do not think this would be an issue in a car. Your not just fully discharging your battery all the time anyways like you try to with an Li ion battery.

That said I would never spend that much money on a battery. It just isn't that big of a deal. I rarely keep a vehicle long enough to justify this anyways.

quote me if I`m wrong but with lithium batts you can charge those anytime because they don`t have amemory like the nicad batts.

[Helihover]

Originally Posted by puddinboo

quote me if I`m wrong but with lithium batts you can charge those anytime because they don`t have amemory like the nicad batts.

Correct.

[TiAgX5]

Depending on discharge depth, a Lithium battery can do 5x as many cycles as lead acid. It can handle 80% depth of discharge (DOD) while lead acid handles 50%. If replacing a lead acid battery under two years old due to deep-cycling damage, you'll save in the long run switching to Lithium-ion.

If you run lith-ion below 80% it shortens their life.

[Helihover]

Originally Posted by mcurcio1989

The voltage on the battery does not just drop off immediately it is a protection on the battery. So once the voltage drops to a certain point it will shut off to prevent it from discharging itself to a point that would cause damage over time. I really do not think this would be an issue in a car. Your not just fully discharging your battery all the time anyways like you try to with an Li ion battery.

That said I would never spend that much money on a battery. It just isn't that big of a deal. I rarely keep a vehicle long enough to justify this anyways.

You should never try to fully discharge a lithium battery and that's why there is a cutoff built into each pack for your drill, or, the drill has a cutoff. It's based off voltage wich is an inaccurate way of measuring discharge, but gets the job done. 80% discharge is industry standard at the moment which would leave 20% of 1c. C = capacity which would be the availible milliamperes or amps/hr. This being said you can see how measuring voltage is inaccurate. We will soon see systems that measure amp depletion instead of volts. In your drills case, this would be very benificial. They would then work at sub freezing temps and would carry a heavy tourque load until the battery is fully discharged to 20 % of 1c. All batteries loose voltage in colder temps and lithium batteries do this best. Your frozen battery on your drill is showing a lower voltage than the cut off.

[puddinboo]

Originally Posted by TiAgX5

Depending on discharge depth, a Lithium battery can do 5x as many cycles as lead acid. It can handle 80% depth of discharge (DOD) while lead acid handles 50%. If replacing a lead acid battery under two years old due to deep-cycling damage, you'll save in the long run switching to Lithium-ion.

If you run lith-ion below 80% it shortens their life.

which means in our -30c weather lith ion batteries would be no good cause batts loose there charge in cold weather .

[Helihover]

Originally Posted by puddinboo

which means in our -30c weather lith ion batteries would be no good cause batts loose there charge in cold weather .

They don't loose their charge in cold weather. The voltage drops. The amps are still there.

With lithium batteries being so much lighter, you can keep the voltage the same, but increase amps in the same demensions. A higher amp battery will produce a higher voltage under load compared to a battery with a lower amp rating. So it might be very well possible that a lithium car battery would perform better in colder conditions being that it has a higher voltage output due to a higher amp rating.

I'll say this. I don't believe MB would be installing these in cars if they were unusable in colder climates.

[puddinboo]

these batteries are just to new for me I guess I`m old school .I am sure MB did alot of testing on these batteries too.

[Helihover]

Originally Posted by puddinboo

these batteries are just to new for me I guess I`m old school .I am sure MB did alot of testing on these batteries too.

Lol. Your not that old school. Your on the intraweb talking about the future of transportation advancement.