Charging ST16 battery on external lipo charger

Bobjazz · Jun 30, 2016

Anyone else charging their ST16 battery on a regular lipo charger? I'm curious because the readings I get from the ST16 (in pad mode), a battery tester and the charger don't match up. Here's the readings I got: 51% left in pad mode on the ST16, 35% left on the battery tester (HK-010). When I charged it back up, I put in 3140mA which is about 36% - 3140/8700 (64% left). I know the battery readings aren't totally accurate, but these are way off.

Maybe this battery isn't actually 8700mAh. Anyone got a clue?

Mortalis · Jun 30, 2016

Not sure what battery you got with your H but mine is only 5400mAh.

Bobjazz · Jun 30, 2016

Mortalis said:
Not sure what battery you got with your H but mine is only 5400mAh.

Not the TH battery, the ST16 controller battery (1S 3.7v 8700mAh)

Haydn · Jun 30, 2016

I put back in 6000 or so mAh on the external charger. Didn't take notice of what the controller said sorry.

Mortalis · Jun 30, 2016

Bobjazz said:
Not the TH battery, the ST16 controller battery (1S 3.7v 8700mAh)

Doh!
My bad

Dragonflyerthom · Jun 30, 2016

That is normal. The controller is set up to control multiple flight on several batteries before needing to be recharged. That is why it is a li-ion battery.

Bobjazz · Jun 30, 2016

Haydn said:
I put back in 6000 or so mAh on the external charger. Didn't take notice of what the controller said sorry.

What about voltage? or percent of charge (if you have a cell tester)

Haydn · Jun 30, 2016

Sorry haven't tried all that yet. I looked my ec2 plug to someone and have to wait until it comes back to do more testing.

tinchob · Jul 21, 2016

Dragonflyerthom said:
That is normal. The controller is set up to control multiple flight on several batteries before needing to be recharged. That is why it is a li-ion battery.

so it is confirmed?: ST16 battery is a Li-ion 3.7v 8700mAh

Could be possible, for example, be charged via an iPhone wall charger????

tks!

JCFlippen · Jul 21, 2016

tinchob said:
so it is confirmed?: ST16 battery is a Li-ion 3.7v 8700mAh

Could be possible, for example, be charged via an iPhone wall charger????

tks!

I am lost on similar threads but I have posted somewhere that a USB 2.1 amp iPad charger works fine with the ST16.

tinchob · Jul 21, 2016

JCFlippen said:
I am lost on similar threads but I have posted somewhere that a USB 2.1 amp iPad charger works fine with the ST16.

ok JCF, i will give it a try....TKs!

Mortalis · Jul 21, 2016

I use the same charger I use to charge any of my other usb chargeable devices

Jimmylee · Jul 21, 2016

The ST16 can be charged from a standard USB charger but it has to supply at least 2.0 amps.

Many of the USB chargers for phones only supply 1 amp charge output and this will not charge the ST16 battery all the way.

Chargers that come with iPhones = 1 amp, Chargers that come with the iPad = 2 amp.

BroVari · Jul 21, 2016

If anyone has doubts about the battery in ST-16, it's mentioned here: Drones : Typhoon H Advanced

"In-Built LiPo Battery Voltage / Capacity: 3.6V/8700mAh 31.32Wh Li-ion"

Bobjazz · Jul 21, 2016

So it's 3 weeks later...
Am I still the only one besides @Haydn charging the ST16 battery on an external charger?

Jimmylee · Jul 21, 2016

Bobjazz said:
So it's 3 weeks later...
Am I still the only one besides @Haydn charging the ST16 battery on an external charger?

I don't feel the need, other wise I would!

Bobjazz · Jul 21, 2016

No worries @Jimmylee

. I was just curious since the milliamps put back in don't match the 8700mah stated on the battery. Kinda like the 5400mah on the aircraft battery, but in reverse (ST16 states 8700mah, but only seems to be about 80% of that. TH battery states 5400mah, but seems to be 6400mah

)

Jimmylee · Jul 21, 2016

Bobjazz said:
No worries @Jimmylee . I was just curious since the milliamps put back in don't match the 8700mah stated on the battery. Kinda like the 5400mah on the aircraft battery, but in reverse (ST16 states 8700mah, but only seems to be about 80% of that. TH battery states 5400mah, but seems to be 6400mah )

8700mah seems like a pretty hefty battery.
Are you looking to replace or just curious?

JCFlippen · Jul 21, 2016

Jimmylee said:
8700mah seems like a pretty hefty battery.
Are you looking to replace or just curious?

I use a RavPower RP-PB19 16750mAh USB powerbank as standby backup for the ST16. Cheaper than a spare battery and useful for other applications as well.