JMBatteries 48V 100Ah Sodium Ion Battery vs Ohmmu Sodium Group 31 100Ah Battery

These are different batteries for different jobs. The JMBatteries 48V 100Ah is a 4.8 kWh stackable pack built for solar storage and 48V systems, so it suits home backup, off-grid power and 48V golf carts or RVs. The Ohmmu Group 31 is a 12V dual-purpose battery with 2,000+ CCAs and a Group 31 footprint, so it drops into engine-start and 12V deep-cycle roles. On build, Ohmmu publishes more detail: IP65 sealing, a 6,000-cycle rating at 80% depth of discharge, and operation from -40°F to 172°F. JMBatteries leans on a 10-year warranty and stackable, movable packaging. Neither has a deep public review base, so judge them on the spec sheets.

• Choose the JMBatteries 48V 100Ah if you are building or expanding a 48V solar, backup or off-grid system and want a stackable 4.8 kWh sodium pack with a 10-year warranty.
• Choose the Ohmmu Group 31 if you need a 12V drop-in replacement for a Group 31 lead-acid battery, with high cranking amps, deep-cycle capacity and cold-weather tolerance.