IMPORTANT! Use only the LIFEPAK 1000 Defibrillator Battery Charger to charge the Li-ion battery. ... Charge the battery fully within 6 months of when you receive it. Fully recharge the battery at least once every 6 months thereafter.
How long does a Lifepak battery last?
LIFEPAK® 1000 Defibrillator The approximate level of charge is indicated by the fuel gauge. Do not attempt to recharge the battery. A new nonrechargeable battery provides approximately 17 hours of “on” time or 440 discharges at 200 joules.