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Trouble to charge OSTC Plus battery
Posted by: dadefay ()
Date: February 23, 2019 06:42PM

Hi,

My OSTC Plus being locked, I had to remove and reinsert its battery ; this is the original 3.7 V rechargeable lithium battery.

When the computer starts (firmware 3.00 and later 3.01), I choose "3,6 V chargeable (T2)" - in fact 3.7 V. Then the computer indicates 99% but the voltage is only 3.0 V, meaning the battery is almost empty.

I put the computer on its inuctive charger, it is detected, charging starts and the green led ligths. But after a few seconds, the red led flashes and charging stops.

Any idea of what is wrong ?

Didier A. Defay
OC trimix diver / CCR air diver
France

OSTC Plus #16077
- OSTC 3+ #4806
-- OSTC 3 #3999

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Re: Trouble to charge OSTC Plus battery
Posted by: heinrichsweikamp ()
Date: February 23, 2019 06:46PM

Hi Didier,

Power supply sufficient? It should be at least 1.5A at 5V. In which circumstances did your unit freeze?

regards,
Matthias

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Re: Trouble to charge OSTC Plus battery
Posted by: dadefay ()
Date: February 23, 2019 08:46PM

Hi Matthias,

Thank for the advice : the charger was connected to a USB port of a laptop probably not able to provide enough current ; once connected to another power supply, charging looks ok.

This is strange because from the beginning (more than one year) I always used laptop USB port with no trouble ; maybe this time the battery was too deeply discharged ?

A last info : the unit was locked in dive mode (cf. our private exchanges last week).

Kind regards.

Didier A. Defay
OC trimix diver / CCR air diver
France

OSTC Plus #16077
- OSTC 3+ #4806
-- OSTC 3 #3999

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Re: Trouble to charge OSTC Plus battery
Posted by: Ralph ()
Date: February 24, 2019 08:56AM

An OSTC that is active, i.e. with screen (and hence backlight!) on, will draw more current from the charger compared to charging only while in sleep mode...

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