The 2400mAh battery is not that good. I get less than 4 hours with it on wifi. I found 4000mAh batteries on ebay for under $20. These are 7.4v 15C batteries.7.4V 4000mAh 15C RC Battery AkkU for SH boat car truck - eBay (item 160426803245 end time Aug-21-10 02:49:08 PDT)I have already taken apart my Zenpad 4 before, I saw how the battery is and how it is connected. My question, is it really that simple? I can easily order one of these batteries, cut the little white connector from the old battery and solder it to the new battery and done! but am I missing something here? the voltages are the same but what about the burst rate? i think the Zenpad 4 has a 5C burst rate. is that a big issue? i dont wanna fry my pad so what precautions do i need take to ensure i have a functioning tablet after? also, what are the dimensions of the current battery? i forgot to measure it and if someone knows, please share. i dont wanna have anything bulging out. I dont mind taking the plunge.