So, I bought 2 of these units to use as UPS's for computer servers and switches, routers etc.
First of all they don't like regular wet batteries. Although they will work, mine had a "warning tone" emanating from inside the unit. The tone stopped when I switched the battery to a lithium ferrite 100Ah, yes you can use a 100Ah, Back up will simply run less time than if you use 200Ah battery or 2X100Ah in parallel ( as recommended by Vevor )
Over all performance is very good in terms of maxing out the unit to 2500kw with no issues.
Switch over from DC<-.>AC & AC<->DC timing is not too bad all of my computer gear stayed on during the switching.
Even though you may charge a new lifepo4 battery to max prior connecting to the inverter, the inverter will continue to charge this battery until it is fully charged the indicator light will go green once completed this may take a few hours. Did not have an BMS problems, no disconnects.
If the charger light is "green" but flashing and you hear a faint tone coming from inside the unit that means that the battery you are using is not good, or this unit doesn't like. I used a brand new lead acid 800cca and It did not like it, it worked but alarm kept beeping.
Multi stage charger work very well.
Over all not too bad, for the price which is the lowest in this category of inverter chargers, it is worth it.
| Brand | VEVOR |
|---|---|
| Manufacturer | VEVOR |
| Model | SGPC2500W-121 |
| Model Name | 2500W Sump Pump Battery Backup System |
| Part Number | Sump Pump Battery Backup System 2500W |
| Mounting Hardware | 1 x Power Cord, 2 x Battery Connecting Cables, 6 x 40A Fuses |
| Number of Items | 1 |
| Display type | LCD |
| Wattage | 2500 watts |
| Power source type | Battery Powered |
| Batteries Required | No |
| Battery Capacity | 100 |
| Frequency | 60 Hz |
| Does it contain liquid? | No |
| Manufacturer | VEVOR |
| Item model number | SGPC2500W-121 |
| Product Dimensions | 48.01 x 17.3 x 10.59 cm; 6.8 kg |
| ASIN | B0D3LJHBJ3 |
