Editing PowerBook Duo 2300 (section)

=== Battery and power ===
The 2300c uses the same Type 3 battery as the 280 and 280c, Apple part 661-0053.<ref name="ss" /> Sideburn on 68kMLA found that a Duo battery pack contains a Dallas DS2400 identification chip and that a 2300c would not run from 12 V applied to the battery contacts on a bench supply until the chip was connected. Sideburn rebuilt a pack with AA-size NiMH cells.<ref name="types">68kMLA forum thread [https://68kmla.org/bb/threads/powerbook-duo-battery-pack-types-and-compatability.46965/ "Powerbook Duo Battery Pack types and compatability"], Sideburn and others, March-November 2024. Rebuilt M7782 and M1499 packs; DS2400 identification chip required for the 2300c to run from the battery terminals; bench test at 12 V, 1.6 A limit. Community repair report.</ref> Apple's adapter check is 24 to 25 V at the plug, dropping no more than 1 to 2 V under load (PDF pp. 207-208); the older 24 V Duo adapter is not for use with a 2300c board.<ref name="ss" /><ref name="ss200" />