SimplyGo Rechargeable Battery (2 Pack) - Includes Terminal Protectors

When I first began to use this type of battery in my oxygen concentrator, they would last any where from 3 to 4 hours. Since that time the same type batteries that I have purchased do not hold their charge and may only last a little more then 2 hours. I only have my machine set on 2.5 liters which isn't much so don't understand why they drain down quickly. As this is something that I need to continue breathing I will just have to make sure that i am always around somewhere that i can recharge the unit. It makes it hard to have a normal life and go and stay as long as I want.

A necessity that can be so very costly ... but we need it to breathe outdoors. Thank you so much for the price of these batteries. It works perfectly with my Simply Go ....

Great price on a set of replacement batteries. Delivery was fast. A bonus that they come with terminal protectors so you don’t have to worry about shorting out the batteries when storing/carrying them in your bag while traveling out.

battery`s ok, wish they would last longer. an need more of the little yellow caps, where can i get some ??. i will pay for them.

Work well. Will see after a few charges how they hold up

These are good batteries. They don't last as long as my original batteries when new. That's disappointing. Also did not send covers as advertised.

No problem. They don hold a charge after2 years

Working out great