Just a reminder that the 3DS has a worse battery life than the switch (3-5 hours) : r/NintendoSwitch
How Long Does the Nintendo 3DS XL Battery Last?
Rechargeable Battery Pack for Nintendo 3DS XL® / New 3DS XL® - XYAB
Accessory Review: Mugen Power's New Nintendo 3DS and 3DS XL Extended Batteries | Nintendo Life
Amazon.com: 3DS XL Battery Pack, 1750mAh Replacement Rechargeable Lithium-ion Battery SPR-003 Compatible with Nintendo 3DS XL/New 3DS XL : Video Games
Extending the New 3DS Battery Life
Amazon.com: Uwayor 3DS XL Battery, 2000mAh Replacement SPR-003 Battery for Nintendo 3DS XL with Tool Pack Kit (Not for New 3DS) : Video Games
Replacement Battery For New Nintendo 3DS And 3DS XL Models SPR-003 Brand New 3Z | eBay
Increasing my Nintendo 3DS Battery Life! - YouTube
Amazon.com: MAXBEAR 3DS XL SPR-003 Battery, 2200mAh 3.85V Replacement Battery for Nintendo 3DS XL SPR-003 and New 3DS XL RED-001 SPR-A-BPAA-CO XL Console : Video Games
Amazon.com: 3DS XL Battery Pack, (2024 New Version) Ultra High Capacity 3200mAh Li-ion Replacement Battery Compatible with Nintendo 3DS XL SPR-003 and New 3DS XL RED-001 SPR-A-BPAA-CO XL Console : Cell Phones
How long does the Nintendo 3DS battery last? - Quora