Run Times

[martin]

My 2200mah 3 s normally takes around 63 minuets to charge after use, Does that tell you anything. Thanks.

[wparsons]

Time means nothing without know what current you're charging it at.

If you're charging at 1C it should take just over an hour for a fully depleted pack.

1C = 1 * the capacity, in amps. So charging a 2200mah pack at 2.2amps is 1C.

[martin]

When you say a fully depleted pack does that mean one that still has 20% still in the pack so your not letting the pack discharge to much. Thanks.

[wparsons]

Nope, I meant fully depleted (ie needed 2200mah back into a 2200mah pack).

It usually takes about 45 minutes for me to balance charge (balancing takes a bit longer) my 2200mah packs at 2.2amps.

[martin]

Im wondering if i have a problem with one of my 2200 40c-90c 3s packs. I seem to be getting shorter run times than i did. As before i would run up until it slowed & when put on charge it would show 9.9v at the start of charge, Now when i put on charge after running boat to the same point where boat starts to slow i get close to 11v when i put on charge. Any ideas if that shows a possible problem with lipo. Thanks.

[wparsons]

Has anything else changed? Colder weather, different prop?

[martin]

The only thing that ive changed is the esc, I used an Etti 45amp but i an trying a cheaper one just to see if any of these various cheap ones are any good or not. So far performance wise it seems to be working as well as the Etti ones. I know the Etti has a cut off voltage on 3s at 9.9v which is bang on what you get but this cheapo one on 3s they state 9v but i dont get anywhere near 9 v when i put it on charge. Perhaps its the esc as you cant set cut off voltage as its preset with the 3s choice of voltage, But their again so is the Etti as well.

[martin]

Ran the boat today down to its lv cut off & then balance charged & it took 63 minuets & it took 1983mah. This is a Turnigy Nano Tech 3s 2200, Is it discharging to much as speed seems slightly down than what it was. Thanks.

[wparsons]

I would cut the run off about 30 seconds earlier if it was me, 1800mah is about all you want to drain out of a 2200mah pack.

[martin]

Ive been running these packs for around 5-6 months now continuous so they have had a lot of charges & do run them quite hard with the set up ive got. Are they possibly showing signs their past their best & time for some new packs. Thanks.