Good day everyone,


Today I wanted to fly my new tiny whoop for the first time, but it failed within a few seconds.
When plugging in the battery and giving some throttle I saw the battery voltage plummet from 4.10V to 3.20V within seconds and it crashed.
I charged the batteries to 4.20, so seeing 4.10V was also strange.

The batteries are: URUAV 3.8V 300mAh 40/80C 1S HV 4.35V PH2.0 Lipo Battery

When trying to figure out the problem I think it's because I didn't notice they were HV, so need to be charged to 4.35V.
This is another problem, because my ISDT Q6 charger can only charge up to 4.25V....

Am I right that this is the problem?
If so, how can I charge the batteries to 4.35V?

UPDATE:

I found that I had to select LiHV on my ISDT charger.

When I select it, the charger gives me a WARNING: continue without balancer?

What shall I do, just continue? I have the special charging cable with balance plug.

Here is the funny part. People buy LiHV to get the extra few seconds of flying. But if you charge your LiHV to 4.35V, then the battery life will be shorten. So even with LiHV, it is recommended to charge to 4.20V. So no, this is not the reason why your battery dropped voltage so much. Likely that your battery is going bad or you got a bad pack. I would try it a few times, if it is doing the same thing, time to dispose of the pack.

As for your charger not going to 4.35V, switch the battery type from Lipo to LiHV setting.

It only gives you a warning because you didn't plug in your balance connector. If this 1S lipo, you can say ok to continue without balance.

What whoop do you have?

1S LiPos are usually poorly made and I've found that some of them aren't that great to begin with. Even if they are the they don't generally have a very long life anyway unless you look after them really well which most people don't because they are so cheap. The mistake a lot of people make is that they don't bother to storage charge their 1S LiPos so they either get left in a discharged state or a fully charged state, neither of which are good for a LiPo when it's not being used, so they end up just dying really quickly.

I never charge any of my 1S "HV" LiPos to 4.35V for the reasons that Voodoo already mentioned. I just charge all my 1S LiPo's to 4.2V.

For the best quality 1S LiPo's, check out Oscar's article at the following link...

https://oscarliang.com/whoop-toothpick-lipo-battery

For storage charging 1S LiPo's the fast way, see AnyRC's video below...

(08-Apr-2020, 01:23 AM)SnowLeopardFPV Wrote: What whoop do you have?

1S LiPos are usually poorly made and I've found that some of them aren't that great to begin with. Even if they are the they don't generally have a very long life anyway unless you look after them really well which most people don't because they are so cheap. The mistake a lot of people make is that they don't bother to storage charge their 1S LiPos so they either get left in a discharged state or a fully charged state, neither of which are good for a LiPo when it's not being used, so they end up just dying really quickly.

I never charge any of my 1S "HV" LiPos to 4.35V for the reasons that Voodoo already mentioned. I just charge all my 1S LiPo's to 4.2V.

For the best quality 1S LiPo's, check out Oscar's article at the following link...

https://oscarliang.com/whoop-toothpick-lipo-battery

For storage charging 1S LiPo's the fast way, see AnyRC's video below...

Thank you so much, everything is clear and I will look into it!