PSP-2000 (Slim) Cannot Run Without Battery

No. The PSP-2000 requires its internal battery to operate — even when plugged into AC power.

Why

• Power circuitry routes AC through battery management IC.
• No direct DC path from charger to system rail.
• Battery acts as buffer for current spikes (screen, UMD motor, Wi-Fi).

Workarounds (Advanced/Risky)

• USB power mod: Solder 5V from USB to battery terminals. Not recommended — bypasses protection, risks fire/brick.
• Dummy battery: 3.7V regulated supply wired to battery connector. Requires precise voltage/current matching.
• Modified firmware + hardware: Custom PCBs exist for dev units only.

Practical Advice

• Replace swollen/dead battery ($10–15 for quality replacement).
• Use official or reputable third-party battery (Cameron Sino, Insten).
• Keep spare charged — PSP-2000/3000 batteries interchangeable.

Running without battery is not a supported or safe configuration.