# Question re power bank type of battery **URL:** \ **Category:** Robotic kit for Raspberry Pi\ **Created:** [August 19, 2025, 12:35am UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695 "2025-08-19T00:35:31Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![jimji1005](https://avatars.discourse-cdn.com/v4/letter/j/8dc957/32.png) [@jimji1005](https://forum.sunfounder.com/u/jimji1005)\ **Post date:** [August 19, 2025, 12:35am UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/1 "2025-08-19T00:35:31Z")
Hi there, first time posting. quick question is there anyway to power the robot hat with a high capacity power bank that supports PD? The Anker one I have right now has PD which supports 5,9,15,20v. wondering if anyone has done it. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [August 19, 2025, 9:04am UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/2 "2025-08-19T09:04:38Z")
Theoretically, it is possible to use a power bank to charge the battery. However, it does not supply power to the robot hat. Connecting the power bank to the robot hat’s Type-C interface can only charge the battery; this interface is solely for charging the battery and does not directly power the robot hat. ---
**Author:** ![jimji1005](https://avatars.discourse-cdn.com/v4/letter/j/8dc957/32.png) [@jimji1005](https://forum.sunfounder.com/u/jimji1005)\ **Post date:** [August 19, 2025, 3:33pm UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/3 "2025-08-19T15:33:10Z")
Thanks for the response. I guess then I have a follow up question, are there any high capacity batteries, or battery extending packs that I can install? Looking to have a way to both extending the capacity and provide a quick swap interface to change the battery. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [August 20, 2025, 6:14am UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/4 "2025-08-20T06:14:10Z")
Please share which robot kit’s battery are you referring to? This battery is our custom-made one, with a capacity of 2000 mAh. If you want to choose a higher-capacity battery, you’ll need to select and produce it yourself. We can share the battery specifications with you, and you can choose according to those specifications. Battery Specifications: Voltage: 3.7V Rechargeable 18650 lithium battery (two cells) Connected in series You can select a larger battery capacity. Battery connector: XH2.54 3P ---
**Author:** ![jimji1005](https://avatars.discourse-cdn.com/v4/letter/j/8dc957/32.png) [@jimji1005](https://forum.sunfounder.com/u/jimji1005)\ **Post date:** [August 20, 2025, 4:06pm UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/5 "2025-08-20T16:06:15Z")
The kit that I have is the Picar-x v2 Thanks for the spec. I will give that a try. So I am thinking maybe - 2x 9900mAh 18650 batteries - 1 2slot battery holder - XH2.54 3Pin connector Would this work? ![Screenshot 2025-08-20 at 9.04.33 AM](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/6/608bab034a9e7c8afad7c247e5d9bc5a52b544bc.jpeg) ---
**Author:** ![jimji1005](https://avatars.discourse-cdn.com/v4/letter/j/8dc957/32.png) [@jimji1005](https://forum.sunfounder.com/u/jimji1005)\ **Post date:** [August 20, 2025, 4:06pm UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/6 "2025-08-20T16:06:54Z")
the battery I am thinking, generic ![Screenshot 2025-08-20 at 9.05.51 AM](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/b/b90045afc747e163ea6d396aabc7149c601cdbae.jpeg) ---
**Author:** ![jimji1005](https://avatars.discourse-cdn.com/v4/letter/j/8dc957/32.png) [@jimji1005](https://forum.sunfounder.com/u/jimji1005)\ **Post date:** [August 20, 2025, 4:12pm UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/7 "2025-08-20T16:12:19Z")
Can I use even 3-4 batteries in 1 pack? ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [August 21, 2025, 2:28am UTC](https://forum.sunfounder.com/t/question-re-power-bank-type-of-battery/3695/8 "2025-08-21T02:28:31Z")
Theoretically, the battery box you provided is compatible with the batteries. However, you can only connect a maximum of two batteries in series; connecting three or more batteries in series is not allowed. Additionally, if you choose this type of battery box, it is recommended to use top-button batteries instead of coin-cell batteries, as coin-cell batteries may not make proper contact with the metal pieces in the battery box.