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Work laptop battery got a case of the swoles. New battery on top of old one. Apparently a common problem with these laptops: The tech said this was bad, but not the
SOLVED] Dell Latitude e7270 battery
New 2600mah Laptop Battery For Dell Latitude E7240 E7440 E7250 12 7000 Wd52h Kwffn V8xn3 E7450 Battery Wd52h 0wd52h 0kwffn Vfv59 - Digital Batteries - AliExpress
Replacing batteries at work when I came across this one that swelled so much it cracked the plastic : r/techsupportgore
Beware the bulgy battery: lithium-ion batteries removed from laptops can still be dangerous | Macworld