Got a question about batteries. Did a little researching on the forums and seen that it is recommended that when wiring batteries in parallel to use identical batteries. My question is that I already have a D3400 that is going under the hood and was planning to get an additional D3400 to go in the rear, but here lately I have been thinking about getting a D3100 for the rear. The more and more I look at it I prefer the D3100 for the rear, but my concerns are the charging issues I have been reading about with mismatched batteries. Though these batteries are very similar will that keep me from having issues or should I just get the D3400 so I don’t have any issues? TIA.