# backup battery

> battery that powers a system when its usual power source is unavailable

**Wikidata**: [Q372200](https://www.wikidata.org/wiki/Q372200)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Backup_battery)  
**Source**: https://4ort.xyz/entity/backup-battery


## References

1. Freebase Data Dumps. 2013
2. BabelNet
3. Quora