Had to fully teardown, replace a capacitor, replace the battery, and replace the charging port. But I fixed a $10 DSi XL from Offerup! Whoever Ethan is, your DSi is in good
This Nintendo DSi XL Doesn't Power On | Can I Fix It? - YouTube
Nintendo Dsi Twl S003 Battery | Nintendo Dsi Battery Twl 003 | Nintendo Ndsi Battery - Mobile Phone Batteries - Aliexpress
DSi XL Flashing Yellow Power Fix - YouTube
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Battery Pack (New Nintendo 3DS XL, Nintendo 3DS XL) - Nintendo Official Site
Power Socket Charging Port for Nintendo 3DS DSi DSi XL Repair Replacement Part | eBay
Inside the Nintendo DSi « bunnie's blog
Battery Pack (Nintendo 3DS, Nintendo 2DS) - Nintendo Official Site
Nintendo DSi XL Replacement Battery
Amazon.com: CENIFENX DSi Battery, TWL-003 3.7V 840mAh Replacement for Nintendo DSi, NDSi Game Player Battery, with Repair Tool Kit (Not for Nintendo DSi XL DSi LL DS Lite) : Video Games
The Most Common Nintendo 3DS Problems and How to Fix Them | Digital Trends
Nintendo: 3DS Battery Lasts 3-5 Hours | WIRED
New OEM Genuine Replacement Battery Nintendo 3DS XL SPR-003 Battery – Battery World
Nintendo DSi XL review: Nintendo DSi XL - CNET
Battery Pack (New Nintendo 3DS XL, Nintendo 3DS XL) - Nintendo Official Site
Rechargeable Battery Pack For Nintendo DSi XL® | Extra Life Gaming
How to Replace the Rechargeable Battery in a Nintendo DSi XL - YouTube
Amazon.com: Replacement Battery for Nintendo DSi XL by Mars Devices : Video Games
Nintendo DSi XL: Nintendo throws a great system under bus | Ars Technica
Game Console Battery 3.7V/900mAh UTL-003 for Nintendo DS XL, DSi LL, DSi XL, UTL-001 - AliExpress
Trying to fix a Nintendo DSi. It's not charging. - YouTube
Amazon.com: Pickle Power 3DS Battery, 1350mAh CTR-003 Battery for Nintendo 3DS, 2DS XL, 2DS Game Console with Tool Kit (Not for New 3DS and 3DS XL) : Video Games
The (Nearly) Definitive Nintendo Battery Test | WIRED
The Great 3DS Battery Life Test | Outcyders
Nintendo DSi XL Battery Replacement - iFixit Repair Guide
Nintendo DSi XL: Nintendo throws a great system under bus | Ars Technica
Nintendo DS Lite charge port replacement and NDSL troubleshooting power guide - YouTube