<p>You either have to recharge your battery (if you're using a battery pack) or replace the batteries (if you're using normal batteries). If this symptom persists after charging the battery pack, try to do a master reset on the brick. Failing which, you might have to replace the battery pack. </p>

CC BY-SA 4.0
2019-04-12T06:24:53.780Z
2019-04-12T06:24:53.780Z
Juin
<p>It's a symbol for low battery power.  You have to recharge the brick.</p>

<p><a href="https://i.sstatic.net/W5Tuk.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/W5Tuk.jpg" alt="enter image description here"></a></p>

<p>How long?  Check out <em><a href="https://www.youtube.com/watch?v=_LAsQT7MJ7k" rel="nofollow noreferrer">Mr. Hino's YouTube video</a></em> on how long it took to juice his back up.</p>

<p>For a full recharge, we're waiting for the red brick light to turn off...</p>

<p><a href="https://i.sstatic.net/qpOpP.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/qpOpP.jpg" alt="enter image description here"></a></p>

<p><a href="https://i.sstatic.net/LzxoK.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/LzxoK.jpg" alt="enter image description here"></a></p>

<p><a href="https://i.sstatic.net/F5Pzc.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/F5Pzc.jpg" alt="enter image description here"></a></p>

CC BY-SA 4.0
2019-04-12T04:19:45.093Z
2019-04-12T05:03:51.557Z
2019-04-12T05:03:51.557Z
Rin Rio-Oki
<p>I can’t figure out how to get my R3PTAR to open and close it’s mouth to bite. I keep getting this symbol. What does it mean?</p>

<p><img src="https://i.sstatic.net/FNzgF.jpg" alt="enter image description here"></p>

<ev3><mindstorms><programming>
What does this symbol on the EV3 Brick mean?
Kate 
# What does this symbol on the EV3 Brick mean?

(Asked by: username_0 on 2019-04-12)

I can’t figure out how to get my R3PTAR to open and close it’s mouth to bite. I keep getting this symbol. What does it mean?

![enter image description here](https://i.sstatic.net/FNzgF.jpg)

**Tags:** ev3, mindstorms, programming


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## 2 answers

### Answer by username_1 on 2019-04-12. Score: 3

You either have to recharge your battery (if you're using a battery pack) or replace the batteries (if you're using normal batteries). If this symptom persists after charging the battery pack, try to do a master reset on the brick. Failing which, you might have to replace the battery pack.


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### Answer by username_2 on 2019-04-12. Score: 0

It's a symbol for low battery power. You have to recharge the brick.

[![enter image description here](https://i.sstatic.net/W5Tuk.jpg)](https://i.sstatic.net/W5Tuk.jpg)

How long? Check out *[Mr. Hino's YouTube video](https://www.youtube.com/watch?v=_LAsQT7MJ7k)* on how long it took to juice his back up.

For a full recharge, we're waiting for the red brick light to turn off...

[![enter image description here](https://i.sstatic.net/qpOpP.jpg)](https://i.sstatic.net/qpOpP.jpg)

[![enter image description here](https://i.sstatic.net/LzxoK.jpg)](https://i.sstatic.net/LzxoK.jpg)

[![enter image description here](https://i.sstatic.net/F5Pzc.jpg)](https://i.sstatic.net/F5Pzc.jpg)


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