Deposit batches, in AccountsPrep, are essentially the same as Cheque batches but relate to the receipt side of the bank.
For most clients they will not be necessary to use unless:
there are are outstanding deposits / lodgements at year end that you want recorded in the general ledger account for that bank
the client makes deposits (of cash/cheques received) using a deposit / lodgement book that they keep chronological records for (similar to a cheque book but for receipts lodged physically in the bank)
For some clients (or regions) deposit / lodgement books may be totally alien, but we provide this full functionality so it's available for those it applies to...
As we say, 'Deposit batches' work the same as 'Cheque batches':
If you post a deposit batch then it will sit as an outstanding deposit on the bank reconciliation report until such time as it is matched with the relevant receipt in the bank statement batch to reconcile it.
How to work with 'Deposit batches':
The best reference material for Deposit batches is to check the various instructions on cheques, but think of it from the receipt side. So, see here but just consider everything from the receipt side!