Happy Father's Day Sale :
$50 Off Over $400 Code: Dad50
$100 Off Over $600 Code: Dad100
$200 Off Over $1000 Code: Dad200
Sale Deadline：June 20th
This Rechargeable Lithium-ion battery pack is for "1-2L Lightweight Portable Oxygen Concentrator" only. This battery pack can offers up to 3.5 hours usage.
How to use: use "DC5521 power adapter cable”, plug it into the 12V socket, and connect the other end of the cable to the oxygen concentraotr.
Have not used battery pack yet
This battery pack is excellent. It charges in a few hours. When ready to use the lights turn off.
Wonderful product. Wish I had ordered it when I ordered my portable oxygen concentrator over a year ago. I highly recommend this product.
Rechargeable Battery Pack for Travel Use, Offer 3.5 Hours Usage
I’m waiting for instructions for returning. Already send pictures
Works very well