inspiron‑mini9_service manual_en‑us.pdf 

dpavlin@mini2:~$ lscpu 
Architecture:          i686
 CPU op-mode(s):      32-bit
 Address sizes:       32 bits physical, 32 bits virtual
 Byte Order:          Little Endian
CPU(s):                2
 On-line CPU(s) list: 0,1
Vendor ID:             GenuineIntel
 Model name:          Intel(R) Atom(TM) CPU N270  @ 1.60GHz
   CPU family:        6
   Model:             28
   Thread(s) per core: 2
   Core(s) per socket: 1
   Socket(s):         1
   Stepping:          2
   CPU(s) scaling MHz: 100%
   CPU max MHz:       1600.0000
   CPU min MHz:       800.0000
   BogoMIPS:          3191.78
   Flags:             fpu vme de tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx cons
                       tant_tsc arch_perfmon pebs bts cpuid aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 xtpr pdcm movbe lahf_lm dther
                       m
Caches (sum of all):   
 L1d:                 24 KiB (1 instance)
 L1i:                 32 KiB (1 instance)
 L2:                  512 KiB (1 instance)

dmidecode

System Information
       Manufacturer: Dell Inc.
       Product Name: Inspiron 910
       Version: A04
       Serial Number: DRRZWF1
       UUID: 20202020-2020-2020-2020-202020202020
       Wake-up Type: Power Switch
       SKU Number: Not Specified
       Family: Not Specified

bios cell batery
Manual claims there is battery holder for BIOS cell battery ‑‑ there isn't. You will have to have battery with spot welded wings to which you can solder original wire to change it.