Tablet currently uses 3.7V 2x2500 Lithium batteries... 2 are connected by some means it appears...

my question is if I pull those out cause they are expired, can I replace it with a single 3.7V5000Mah battery or am I either going to get too much/little going into the battery from the charger or to little from the batteries into the tablet's main board... (i.e. does the chaining of 2 smaller batteries double anything that a single larger battery does not provide)


Thanks
dc

I'd recommend sticking with what you had originally. Both for physical size plus you will run double the current through a single track that might not be up for it.

Tablets really have no room to spare...far less than laptops.