- Power adapter
- 65 Watt
- for ThinkPad Edge E431; E440; E531; E540; ThinkPad L440; L540; S431; S440; S531; S540
100% OEM compatible. Keeping your laptop un-plugged and working longer is essential in today's business world. Axiom replacement batteries AX are manufactured using the highest quality components for long and reliable battery life.