late now, but I don't see why the multimeter you purchased would not be good enough to read your battery
INTRODUCTION
This is a portable clamp meter, with a 3-1/2 digit LCD screen designed for use by electricians, technicians and
hobbyists looking for an accurate and reliable instrument. It is powered with a standard 9V battery, and can provide
100 to 200 operating hours, depending on type of battery and intensity of use.
SPECIFICATIONS
AC Current
0.1A to 1000A
AC Voltage
1V to 750V
DC Voltage
1V to 1000V
Resistance
100mW to 20KW
Continuity test
50 ± 25W with audio ton