You don't need an SDS for DMR. A BCD325P2 can decode DMR at a cost savings.
For that matter, the BCD996P2 can also decode DMR with the upgrade in place.
However, one note of caution here:
While the 325P2 & 996P2 can receive DMR, they cannot determine the LCN's used on a trunked system. As long as the DMR system is documented in the RRDB, that's not an issue. However, if this is a "new" (undocumented) system, neither the 325P2 nor 996P2 have the ability to determine the LCN's used on an undocumented system. The SDS series scanners, as well as the x36HP models, do have that ability. As long as the system frequencies are scanned conventionally, or as "One Frequency Trunked", the 325 & 996 will both work. But if it is a true DMR trunked system, with several frequencies used, neither of these scanners can correctly monitor the system without the LCNs. Those details could also be determined with one of the SDRs using downloaded software, but without the correct LCNs, neither the 325P2 nor 996P2 will track the system correctly.
Also, you may be interested in this website:
Digital Frequency Search
That website can be useful for finding new systems, that are not in the database, it focuses on who is licensed to use the selected signal format (DMR, NXDN, or P25), with no determination as to whether or not that mode is actually in use. You'll find a number of licensees that are authorized to use one of those digital modes, but at present, they are not in use.
Battery life has been reported not to be so great though. I never used mine on batteries so not sure.
Short battery life has often been discussed as a drawback to using the 325P2. Either keep one or more sets of extra, charged, batteries, or use one of the power bricks such as used for charging cellphones or some tablets.
You can however use a small battery bank like
one of these...
I have that same item, and at times, use that on my SDS100 to maintain power in my vehicle when the ignition is off. (The power port/cigarette lighter is only usable when the ignition is on.)