Charging Adapters?

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I've got around 4 different micro-USB AC Adapters that I have lying around. One is the OEM Lenovo, One is OEM Samsung (i777 charger + Samsung Micro-USB cable), one is a multi-USB port AC adapter with a micro-usb cable, and the last is an iPad 2 wall charger with a micro-USB cable.

ALL of the chargers except the OEM Lenovo ones don't charge my tablet. When It's plugged in, for a couple of seconds it says Charging (AC), and then it just switches to discharging. I've tried all the aforementioned chargers and cables in different combinations, and the ONLY ones to work correctly is the Lenovo combo.

Is there a specific reason to this? Also tried all 4 cables connected to my PC.. They all don't charge efficiently at all.

look at the Voltage and Amperage of the adapter !

Lenovo use 2A if I remember well, the other use only 1A

quyTam is correct... most USB chargers are between 500mA and 850mA. The dual battery design of the tablets requires a min of 2A to charge correctly. This is why most computer USB ports will not charge the device.

However... the changer isn't the only thing restricting the power. The cable you are using can also effect power. Not all cables are created equal.

I stopped by Staples just after getting my tablet and picked up a 4 port 2.1A USB wall charger. It will charge my phone, Bluetooth, and tablet. There are also really nice 2A "extra battery" devices out there that allow you to a charged battery with you that will power and recharge your device.

I also recommend the dock for the tablet... it has a 65w power supply and charges the tablet in a 1/3 the time then the usb chargers.

where to get a charger

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i tried 2Amp chargers....didn't help/
my brother says:
"the pins are slightly different/off/longer/shorter/what DID lenovo do here?"

as a safety i bought:
http://www.ebay.com/sch/?_kw=8866050...&_stpos=&gbr=1

just in case...
it costs an arm and a leg for a microUSB charger, but not charging the device for a couple of days would cost me more :S

just another things that makes the TPT slightly less then perfect
o,O

Charger

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I use a Dell Axim x51 charger and an LG cable from an old phone. Seems to work very well and eBay prices for the charger are less than $4.

http://rootzwiki.com/topic/8523-reve...94#entry448194

In my experience a 1A charger will also work. Nothing less than 1A will do anything.

I keep my Lenovo charger in my home office and use a 1A phone charger next to my bed for overnight charging.

I too have a 4 port mains to USB charger: 2A but I thought it was distributed to the 4 ports. If all were being used then each port would only be .5A.

Will have to try it out. If it works it would lighten the travel load of chargers.

Originally Posted by Gottoon

quyTam is correct... most USB chargers are between 500mA and 850mA. The dual battery design of the tablets requires a min of 2A to charge correctly. This is why most computer USB ports will not charge the device.

However... the changer isn't the only thing restricting the power. The cable you are using can also effect power. Not all cables are created equal.

I stopped by Staples just after getting my tablet and picked up a 4 port 2.1A USB wall charger. It will charge my phone, Bluetooth, and tablet. There are also really nice 2A "extra battery" devices out there that allow you to a charged battery with you that will power and recharge your device.

I also recommend the dock for the tablet... it has a 65w power supply and charges the tablet in a 1/3 the time then the usb chargers.

That's for sure. I thought the dock was a waste of money until I forked out on Amazon. Saves so much time it isn't funny....

Sent from my Nexus S using xda premium

The tablet needs to see 5.3 V, when using >500mA.

Already thinner USB-Cables increase the voltage drop
so the thinkpad wont charge, even with the original charger.

It may have less to do with your charger than with the cables. I bought extra long (6 and 10 ft) USB cables for charging phone and my TPT. The 28AWG of any length won't charge the TPT. The 24AWG 6 ft and 10ft cable *will* on a 2A charger. I haven't tried other combinations. I believe it will charge on a 1A charger as well, but would likely require the larger 24AWG cable.

Sent from my PC36100 using Tapatalk