The DJI RS 4 runs up to 12 hours on its included BG21 grip (3000 mAh), and up to 29.5 hours with the optional BG70 High-Capacity Battery Grip. The RS 4 Mini lasts up to 13 hours on its built-in battery, and the RS 4 Pro up to 13 hours on its BG30 grip or 29 hours with the BG70. DJI measures these with the gimbal balanced and still, so expect less on a real shoot.
Battery specs by model
| RS 4 | RS 4 Mini | RS 4 Pro | |
|---|---|---|---|
| Grip/battery | BG21, removable | Built in, not removable | BG30, removable |
| Capacity | 3000 mAh, 21 Wh | 3100 mAh, 22.32 Wh | 1950 mAh, 30 Wh |
| Max runtime | 12 h | 13 h | 13 h |
| With BG70 | 29.5 h | Not supported | 29 h |
| Charge time | About 2.5 h (18 W PD) | About 1 h 50 min (30 W) | About 1.5 h (24 W) |
The BG70 High-Capacity Battery Grip
- Capacity: 4800 mAh, 69.12 Wh.
- Runtime: up to 29.5 hours on the RS 4 and 29 hours on the RS 4 Pro.
- Powers your camera: a USB-C port on the bottom supplies up to 18 W to cameras and accessories. DJI notes it charges mainstream cameras only when they're powered off, at a speed set by the camera's charging protocol.
- Fits: RS 5, RS 4 Pro, RS 4, RS 3 Pro, RS 3 and RS 2, per its product listing.
- Our price: $164. See the DJI RS BG70 High-Capacity Battery Grip.
It's a good buy if you shoot long event days, weddings or timelapses, or want to power a small camera accessory from the gimbal.
Extra and spare batteries
- RS 4: the BG21 grip is removable, so a second BG21 or a BG70 makes a quick swap. DJI says the RS 4 grip also fits the RS 3, but not the RS 4 Pro.
- RS 4 Pro: uses the BG30 grip or the BG70.
- RS 4 Mini: the battery is built in and can't be swapped. DJI says you can use it while charging, so a USB-C power bank on a cable extends a shoot. DJI recommends a PD fast charger of 30 W or more.
Getting the most runtime
- Balance carefully. DJI warns that imbalance shortens battery life and severe imbalance can overheat the gimbal. See how to balance the RS 4.
- Run Auto Tune so stiffness matches the payload.
- Use sleep mode between takes: press the power button once to lock the axes.
- Watch accessories. Powering a camera, focus motor or transmitter from the gimbal reduces its runtime.
- Charge with the right charger: PD for the RS 4 and Mini, QC 2.0 or PD for the RS 4 Pro.
- Check the level while off: press the battery level button (RS 4 and Pro) or the power button once (RS 4 Mini).
Flying with gimbal batteries
All of these are under 100 Wh, including the 69.12 Wh BG70, so they don't need airline approval under US rules. Spare lithium batteries, including a spare grip, must go in carry-on bags with terminals protected. See traveling with a drone for the same battery rules.
Charging problems
If the grip won't charge, try a different PD charger and cable, and on first use, plug it in to wake the battery as DJI's manual describes. Persistent issues: contact us.
Shop the DJI RS 4 or compare models in RS 4 payload.
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