Replacement battery?

Robotic kit for Raspberry Pi
1

Hi Sunfounder, I’ve been putting my pidog through some quite intensive workouts over the last year that I’ve owned it.

I have noticed that the battery runtime is starting to decrease and often shuts down completely if I try servo type functions e.g. walk.

Is it possible to purchase a replacement battery?

Thanks

2

I used 2 5000mah 21700 instead of 2 18650. It has a much longer life now.

3

To assist with your battery inquiry, please:

  1. Voltage Measurement:
  • When fully charged: Measure and record the voltage of each battery separately using a multimeter.
  • When completely drained: Repeat the measurement for both batteries.
  1. Regarding 5-pin Battery Replacement:
    While we can provide the battery, please note that shipping standalone batteries carries significant logistical challenges:
  • Most carriers reject battery-only shipments due to strict safety regulations
  • High probability of package return during security checks
4

Thanks hozdemir. That’s probably the route I’ll take. My pidog used to run for about 20 minutes, depending on what I was asking of it. But now it’s probably less than 10 minutes. I don’t think anything is amiss, just normal battery wear and tear.

Was it straightforward to make up the new battery pack? Connectors etc?

5

Thanks Sunfounder. Understood. I’ll source a replacement battery locally.

I cannot anyway do the measurements that you suggest, as I do not own a multimeter.

6

We recommend that you choose the correct battery according to our specifications.

18650 Lithium Battery
Rechargeable
3.7V
You can select the battery capacity yourself, but we suggest choosing 3000mAh or higher.

8

Could you possibly provide the specifications / part reference & brand for the connector which is used on the PiDog battery pack? I would like to create a new battery pack with higher capacity batteries.

10

Introduction to the battery pack, please refer to our tutorial:
5-pin Battery Documentation
The connector is PH2.0-5P.

11

Now Robot Hat V5 used this About the Battery — SunFounder Robot HAT documentation

12

Where can I buy an extra battery for Robot Hat v5?

13

The 3PIN battery pack for the Robot Hat V5 is customized by us.

14

I have a problem because I wanted to buy an additional battery. I wrote to the service center and got a reply:

“We sincerely apologize for the inconvenience, but due to strict international shipping regulations, lithium batteries sent alone are highly likely to be rejected during security checks and returned. Unfortunately, this makes it nearly impossible for us to ship the battery separately. The product link we shared earlier includes the battery bundled with the Robot Hat Expansion, which meets shipping requirements and can be delivered successfully in most cases.”

I can buy the battery with the Robot Hat module, but not alone :frowning: I think there are more people with this problem. How can I solve it? Maybe I can buy a replacement battery in my country based on the wiring diagram? Could Sunfounder make such a diagram available?

15

Battery Specifications:

Voltage: 3.7V
Rechargeable
18650 Lithium Battery (two cells)
Connected in series
You can choose a larger battery capacity.
Connector: XH2.54 3P