ENERGY PROBLEMS GT-P1000L (solved !) - The Galaxy Tab Forum. Acjacques, on 15 October 2011 - 01:50 AM, said: ...i would like appreciate if other users also could confirm this.
The observation that my gtab with the OEM charger can go from dead to 100% full charge in less than three hours is ipso facto evidence that the charging current is a lot more than 470ma (which would take at least 8 hours to complete a full charge of the 4000mah battery). BTW, I forgot to mention that I think these high current chargers may "signal" their high capacity (higher than the 500ma capacity of PC ports), by "nonconventional" USB wiring.
Try something like shorting the data lines, or measure out the wiring of the OEM charger. If you don't replicate the wiring of the OEM charger, then you may not switch on the high current charging mode. MintyBoost - The mysteries of Apple device charging. How to fast charge your Samsung Galaxy phone using any USB charger. If you’re like us, you probably check the battery status on your Samsung phone a dozen times a day, and breathe a sigh of relief when you see a green indicator instead of a red one.
Consider it a quirk of living the modern life, where one depends on gadgets and gizmos that still run on, unfortunately, on non-nuclear batteries. Things are even worse when your device comes with a proprietary charger. While you can still use some cheap, no-name charger, in many cases, devices are designed to only work optimally with original accessories. Thus, what usually takes 2-3 hours with a proprietary charger can easily extend to many hours of frustrating wait, if you, for some reason, don’t have the original accessory. Let’s stop dwelling on the problem and start focusing on the solution, shall we?