The S2 display reads voltage thresholds set at the factory for a new cell's discharge curve
On the MC3190
Rated capacity at 600mAh is reached after three to five full charge-and-discharge cycles on most DECT handsets
check that the battery contacts on both the handset and the base cradle are clean and making solid contact — a resting voltage below 3
this replacement battery pair resists vibration and shock commonly encountered in daily mobility use
Navcom PASSY 7.4V Replacement Battery 3400mAh Li-ion Warranty:Warranty 2 Year The S2 display reads voltageNavcom PASSY RT 3010S SF 3040 Ultra RTK 7. 4V Li ion Replacement Battery This is a 7. 4V, 3400mAh Li ion replacement battery for the Navcom PASSY, RT 3010S, SF 3040, and Ultra RTK handheld GPS and positioning units. These are professional survey instruments used in land surveying, construction stakeout, and RTK positioning work. Swap this pack when the original no longer holds charge through a full field session. PASSY, RT 3010S, SF 3040, Ultra RTK