OESF Portables Forum
Model Specific Forums => Gemini PDA => Gemini PDA - Hardware => Topic started by: Pete G. on March 01, 2018, 11:14:27 pm
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Just a question for those who have already got their Gemini. Is the charger universal voltage? I mean, the plug is different for different regions, but I'd expect that otherwise it would accept both 110 and 240 volt supplies. (One advantage of my US plug -- I already have a 13-amp adapter!)
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Just a question for those who have already got their Gemini. Is the charger universal voltage? I mean, the plug is different for different regions, but I'd expect that otherwise it would accept both 110 and 240 volt supplies. (One advantage of my US plug -- I already have a 13-amp adapter!)
The UK charger I got says:
Input: 100-240V - 50/60Hz 0.6A
Output: 5V 2A/7V 1.67A/9V 1.67A/12V 1.25ALooks pretty flexible.
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Just a question for those who have already got their Gemini. Is the charger universal voltage? I mean, the plug is different for different regions, but I'd expect that otherwise it would accept both 110 and 240 volt supplies. (One advantage of my US plug -- I already have a 13-amp adapter!)
The UK charger I got says:
Input: 100-240V - 50/60Hz 0.6A
Output: 5V 2A/7V 1.67A/9V 1.67A/12V 1.25ALooks pretty flexible.
Thanks -- that's what I hoped/expected.
From the photos it looks as if the 13-amp pins are integral. My old Maplin catalogue (sigh) shows some adapters, but they're a bit clunky.
Might have been nice to have some kind of intermediate connector, but I suppose it would have increased the price.
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First post here: hello to all the innovative, creative and talented Gemini makers, fellow backers and interested people!
According to backers Daniel and James on the FB support page (https://www.facebook.com/groups/1774620199505688/permalink/1802408530060188/?comment_id=1802620023372372&comment_tracking=%7B%22tn%22%3A%22R0%22%7D),
From the comments I’m reading here, it seems that the Gemini does not support USB PD, so this should mean that it is only Pump Express 2.0+ compatible. So this should limit the compatible chargers to:
- Pump Express 2.0+ (and probably the 3.0 ones are backward compatible too)
- Qualcomm’s Quick Charge 2.0
I wonder if the Pump Express compatibility can be upgraded via software, I hope so.
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I agree, it looks like they've used an old charging implementation that was never designed for USB C.
This means any standard USB C PD charger won't work currently. I also hope that this is fixable in software!
I've reached out to Planet through Twitter but they haven't responded except to say that they use "FastPump".
From what I understand it means our Gemini will be limited to above chargers for quick charging, yet still chargeable with any USB compliant standard charger --though at a slower rate? Could some person with knowledge in this matter please correct my conclusion above (speculative)?
Note the FB requires no login -which I appreciate.
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From what I understand it means our Gemini will be limited to above chargers for quick charging, yet still chargeable with any USB compliant standard charger --though at a slower rate? Could some person with knowledge in this matter please correct my conclusion above (speculative)?
Note the FB requires no login -which I appreciate.
That is almost correct. The Gemini will not charge from standard USB C chargers. The Gemini will charge from a standard USB A charger with a USB A-to-C cable connected to the left port of the Gemini. This charges at about 2.5w and will take an estimated 8-10 hours for a full charge.
PC have since confirmed that the Gemini uses PumpExpress, but not which version. I think based on the specs of the charger (the output voltages specifically) that it uses the 2014 version PumpExpress+.
So far we have not identified any chargers other than the supplied one that will charge the Gemini at a faster rate but it should be compatible with other PumpExpress+ chargers. Unfortunately, these seem hard to come by and limits options for car chargers, battery packs and charging USB C docks.
What's worse is that standard USB C chargers (including those certified by the USB-IF) will not charge the Gemini. It is unclear if this can be fixed.