Nintendo 3DS Battery: Model, Replacement & Safety Guide

The Nintendo 3DS (all models) uses a **custom lithium-ion battery** — not a standard off-the-shelf cell.

Console	Battery Model	Capacity	Voltage
3DS (Original)	CTR-003	1300 mAh	3.7 V
3DS XL / LL	SPR-003	1750 mAh	3.7 V
2DS	CTR-003	1300 mAh	3.7 V
New 3DS	CTR-003	1300 mAh	3.7 V
New 3DS XL / LL	SPR-003	1750 mAh	3.7 V
New 2DS XL	SPR-003	1750 mAh	3.7 V

Buy Genuine or Reputable Third-Party: Nintendo official (discontinued, rare), or brands like **Cameron Sino, Duracell, Lenmar, Anker** (via Amazon/B&H). Avoid no-name eBay/AliExpress cells — fire risk.
Check Connector: 3DS/2DS use same 4-pin JST. XL models use same connector but larger cell — fits only in XL battery compartment.
Tools Needed: #00 Phillips (small), plastic pry tool. iFixit guide: “Nintendo 3DS Battery Replacement.”
Calibrate After Install: Charge to 100%, play until shutdown, charge to 100% again (2 cycles).

Swollen Battery: If back cover bulges, **stop using immediately**. Dispose at battery recycling (Best Buy, Home Depot, Staples). Do not puncture.
Non-Genuine Cells: May lack protection circuit (overcharge/overdischarge/short) → fire/explosion.
Modding (Extended Batteries): 3D-printed back shells + 3000+ mAh cells exist. Alters form factor, may stress hinge. Proceed with caution.

Bottom Line: Use CTR-003 (standard) or SPR-003 (XL). Buy quality replacement. Replace if life < 2 hrs or swelling.

Nintendo Wii