Kuvaus
The Pretec SRAM card contains a replaceable but non-rechargeable 3V lithium battery and an on-board rechargeable but non-replaceable battery for data retention. The replaceable lithium battery normally last 1 ~ 2 years
If you are not sure whether the attribute memory is required by your devices or not, it is recommended to choose the SRAM memory cards with attribute memory because:
Features
Specification