PRS-T1 Portable Powerbanks

DoctorM · 10-04-2017, 07:42 PM

I've been looking at a Kmashi powerbank for my phone and wondered if it was safe for my PRS-T1 as well.
It claims 3.1A output, and I seem to recall something like .5-1A is recommended for these readers.

Anyone able to provide some advice or insight?

JSWolf · 10-04-2017, 09:02 PM

Yes, it will work.

DoctorM · 10-04-2017, 11:51 PM

Okay, thanks. I was worried it might do damage with that high an amperage.

Ghitulescu · 10-05-2017, 08:31 AM

Amperage cannot harm the eReader, since it's the Sony that charges the battery not the powerbank.

Richwood · 12-15-2017, 01:48 PM

Normally any device that is USB rechargeable is going to current limit input power to a safe level. Just like appliances plugged into an AC outlet. Such outlets are typically limited to 15 or 20 amps output but the devices plugged in will limit themselves to a safe input current based on their current or power rating.

Also why high current wall USB chargers are almost universal. I have ones rated up to 3 amps output which work perfectly for charging older Kindles which are limited to 0.5 amps input.

10-04-2017, 07:42 PM	#1
DoctorM Groupie Posts: 168 Karma: 43000 Join Date: Mar 2010 Device: none	Portable Powerbanks I've been looking at a Kmashi powerbank for my phone and wondered if it was safe for my PRS-T1 as well. It claims 3.1A output, and I seem to recall something like .5-1A is recommended for these readers. Anyone able to provide some advice or insight? Last edited by DoctorM; 10-04-2017 at 11:50 PM.

12-15-2017, 01:48 PM	#5
Richwood Astronomy Nut Posts: 519 Karma: 3700000 Join Date: Oct 2017 Location: Reno, NV Device: Kindle (All), Kobo (Multiple), Sony (most) and Nook Glowlight Plus	Normally any device that is USB rechargeable is going to current limit input power to a safe level. Just like appliances plugged into an AC outlet. Such outlets are typically limited to 15 or 20 amps output but the devices plugged in will limit themselves to a safe input current based on their current or power rating. Also why high current wall USB chargers are almost universal. I have ones rated up to 3 amps output which work perfectly for charging older Kindles which are limited to 0.5 amps input. Last edited by Richwood; 12-26-2017 at 09:56 AM.

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10-04-2017, 09:02 PM	#2
JSWolf Resident Curmudgeon Posts: 73,851 Karma: 128597114 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	Yes, it will work.

10-04-2017, 11:51 PM	#3
DoctorM Groupie Posts: 168 Karma: 43000 Join Date: Mar 2010 Device: none	Okay, thanks. I was worried it might do damage with that high an amperage.

10-05-2017, 08:31 AM	#4
Ghitulescu Fanatic Posts: 563 Karma: 403106 Join Date: Aug 2014 Device: PRS-T1	Amperage cannot harm the eReader, since it's the Sony that charges the battery not the powerbank.