| Table of Contents |
|---|
Overview
Model: Back-UPS ES 750
Battery Details
| Specification | Detail |
|---|---|
| Image |
|
| Part | AJC-D7S |
| Voltage | 12v |
| Capacity | 7Ah |
| Type | Sealed Lead Acid (AGM) |
| Terminals | F2 |
| Length | 5.94 in / 150.9 mm |
| Width | 2.56 in / 65 mm |
| Height | 3.7 in / 94 mm |
| Weight | 4.5 lbs |
Lithium Iron Phosphate Battery Replacement
I ordered this LiFePO4 battery off amazon which is the exact same size as the original.
...
I performed a capacity test on the old lead acid battery. The battery had a 3 Ah capacity when drained to 10.5v at 2A.
Shutdown Problem
I ended up having some quick shutdowns after replacing the battery.
...
Testing the battery with a 10A load, the battery quickly dropped to 11.6V which the UPS would consider to be 0% left!
Configuring the UPS
List Commands
| Code Block |
|---|
> upscmd -l ups@localhost Instant commands supported on UPS [ups]: beeper.disable - Disable the UPS beeper beeper.enable - Enable the UPS beeper beeper.mute - Temporarily mute the UPS beeper beeper.off - Obsolete (use beeper.disable or beeper.mute) beeper.on - Obsolete (use beeper.enable) load.off - Turn off the load immediately load.off.delay - Turn off the load with a delay (seconds) shutdown.reboot - Shut down the load briefly while rebooting the UPS shutdown.stop - Stop a shutdown in progress test.battery.start.deep - Start a deep battery test test.battery.start.quick - Start a quick battery test test.battery.stop - Stop the battery test test.panel.start - Start testing the UPS panel test.panel.stop - Stop a UPS panel test |
...
| Code Block |
|---|
>upscmd ups@localhost test.battery.start.quick >upscmd ups@localhost ups.test.result |
References
| Reference | URL |
|---|---|
| Manual | |
| Specifications | |
| DIY Replacement Battery 12V 18650 Li-ion For APC Back-UPS 650 | https://www.yousun.org/archives/101 |
| Replace battery | https://www.youtube.com/watch?v=_dydlRHFjrc |
| Details | https://www.yousun.org/archives/660 |
| Teardown Video | https://www.youtube.com/watch?v=6UerOTuV6R4 |