This Non-Rechargeable Lithium-Ion battery comes with the same one year warranty and all the performance for about $90.00 less

A long-life low-maintenance aftermarket battery pack designed for low or infrequent use environments.

• The lithium battery pack requires less maintenance than the SLA battery pack since it never requires recharging.
• A new lithium battery pack may last up to 5 years when installed in the LIFEPAK 500 AED under optimal conditions.