(JP9171840-A)      A non-aqueous rechargeable lithium battery having a lithium insertion compound cathode, a lithium compound anode, a non-aqueous liquid electrolyte, a maximum operating charging voltage and an internal electrical disconnect device. The disconnect device activates at a predetermined internal pressure. The battery comprises a monomer additive mixed in the liquid electrolyte, the monomer additive polymerising at battery voltages greater than the maximum operating voltage thereby generating gas, pref. hydrogen and pressure activating the disconnect device during overcharge abuse. Method for providing overcharge protection is also claimed.    USE -   Non-aqueous rechargeable batteries are provided.    ADVANTAGE -   Improves safety by using aromatic monomer additives as means for generating gas for pressure activating overcharge protection device in the lithium ion batteries.    (US5776627-A)      A non-aqueous rechargeable lithium battery having a lithium insertion compound cathode, a lithium compound anode, a non-aqueous liquid electrolyte, a maximum operating charging voltage and an internal electrical disconnect device. The disconnect device activates at a predetermined internal pressure. The battery comprises a monomer additive mixed in the liquid electrolyte, the monomer additive polymerising at battery voltages greater than the maximum operating voltage thereby generating gas, pref. hydrogen and pressure activating the disconnect device during overcharge abuse. Method for providing overcharge protection is also claimed.    USE -   Non-aqueous rechargeable batteries are provided.    ADVANTAGE -   Improves safety by using aromatic monomer additives as means for generating gas for pressure activating overcharge protection device in the lithium ion batteries.    (US6033797-A)      A non-aqueous rechargeable lithium battery having a lithium insertion compound cathode, a lithium compound anode, a non-aqueous liquid electrolyte, a maximum operating charging voltage and an internal electrical disconnect device. The disconnect device activates at a predetermined internal pressure. The battery comprises a monomer additive mixed in the liquid electrolyte, the monomer additive polymerising at battery voltages greater than the maximum operating voltage thereby generating gas, pref. hydrogen and pressure activating the disconnect device during overcharge abuse. Method for providing overcharge protection is also claimed.    USE -   Non-aqueous rechargeable batteries are provided.    ADVANTAGE -   Improves safety by using aromatic monomer additives as means for generating gas for pressure activating overcharge protection device in the lithium ion batteries.    (JP3061759-B2)      A non-aqueous rechargeable lithium battery having a lithium insertion compound cathode, a lithium compound anode, a non-aqueous liquid electrolyte, a maximum operating charging voltage and an internal electrical disconnect device. The disconnect device activates at a predetermined internal pressure. The battery comprises a monomer additive mixed in the liquid electrolyte, the monomer additive polymerising at battery voltages greater than the maximum operating voltage thereby generating gas, pref. hydrogen and pressure activating the disconnect device during overcharge abuse. Method for providing overcharge protection is also claimed.    USE -   Non-aqueous rechargeable batteries are provided.    ADVANTAGE -   Improves safety by using aromatic monomer additives as means for generating gas for pressure activating overcharge protection device in the lithium ion batteries.    (EP776058-B1)      A non-aqueous rechargeable lithium battery having a lithium insertion compound cathode, a lithium compound anode, a non-aqueous liquid electrolyte, a maximum operating charging voltage and an internal electrical disconnect device. The disconnect device activates at a predetermined internal pressure. The battery comprises a monomer additive mixed in the liquid electrolyte, the monomer additive polymerising at battery voltages greater than the maximum operating voltage thereby generating gas, pref. hydrogen and pressure activating the disconnect device during overcharge abuse. Method for providing overcharge protection is also claimed.    USE -   Non-aqueous rechargeable batteries are provided.    ADVANTAGE -   Improves safety by using aromatic monomer additives as means for generating gas for pressure activating overcharge protection device in the lithium ion batteries.