Hello
Having searched the web for the P11PG7-02-NO1AYBA4 battery over many many months I eventually gave up my search. Then I came across a listing that claimed to be a replacement for the aforementioned battery. https://www.amazon.co.uk/3200mAh-Battery-Samsung-Galaxy-B700BC/dp/B00NE0G7XW/ref=sr_1_1?dchild=1&keywords=samsung+galaxy+mega+6.3+i9200+BATTERY&qid=1621353320&sr=8-1 . I was sceptical at first and then I thought why not try it, especially as the battery was keenly priced at £5.85. After a very short delivery time with amazon and disassembling the drive, which any DIYer could do, and inserting the new battery, hey presto, the drive works perfectly. The replacement battery is a 3200mAh 3.8V Battery for Samsung Galaxy Mega 6.3 i9200 i9205 i9208 (B700BC). I hope this helps.