A common support question we see is "why won't my battery charge via USB-C?" — it comes down to what each port is actually for.
The two ports do different jobs
- DC port: this is the charging (input) port only — this is where you plug in power to charge the battery itself
- USB-C port: this is output only — it's for powering or charging a secondary device (like your phone), not for charging the battery
If you plug a charger into the USB-C port expecting the battery to charge, it won't — that port only sends power out, it doesn't accept it.
What to charge the battery with
Use a 30V 2A lithium charger plugged into the battery's DC input port. This is the recommended charger spec for this battery — a generic phone charger, USB-C PD charger, or the wrong cable type is a common cause of "it won't charge" tickets. If you're not certain your charger matches this spec, check with us before assuming the unit is faulty.
Charging while the battery is powering your Starlink
Some of our battery products support charging while simultaneously powering a Starlink Mini, but the supported charging method and wattage vary by battery model — this isn't universal across every battery we stock. If you want to run this kind of setup, confirm with us which battery you have and the exact charging method it supports before relying on it.
Troubleshooting checklist before assuming it's faulty
- Confirm you're charging via the DC port, not USB-C
- Confirm you're using a 30V 2A lithium charger (not a generic phone charger or USB-C PD charger)
- Check the battery's display for a charging/IN status after connecting
- If it still won't hold charge after using the correct charger, contact us — it may be a faulty unit
Need Help?
Send us a photo of the charger and cable you're using (including the wall plug), and we'll confirm whether it's the right combination for your battery before arranging a replacement.