Hearing Aid Batteries
Product Resource Library
Terms and Conditions
What is mAh?
mAh stands for milliampere hour and indicates the battery's capacity. The higher the mAh, the more charging of devices you can do before you need to recharge the battery.
What is Cycle Life?
Cycle Life is the number of times you can recharge the battery before it will no longer perform.
Are RAYOVAC® NiMH batteries available in all sizes?
RAYOVAC® Recharge Batteries are available in AA & AAA sizes. RAYOVAC® Recharge Plus Batteries are available in AA, AAA, C, D, & 9V sizes. All five sizes can be charged with the RAYOVAC® Universal Charger. RAYOVAC® Value Charger and Smart Charger will charge both AA and AAA rechargeable cells.
Why shouldn’t you mix old batteries with new ones?
The performance of a battery-operated product is limited by the weakest of all the batteries in the device. One old or weak battery can cause poor product performance, even if all the others are new or fully charged.
Can RAYOVAC® Rechargeable batteries be used in any device that takes alkaline batteries?
Yes, you can use the comparable NiMH battery size in any device that uses alkaline batteries. For example, if you typically use AA alkaline batteries, you can also use AA NiMH.
How many times can RAYOVAC® Rechargeable NiMH batteries be recharged?
They can be recharged hundreds of times! That's why using RAYOVAC® Rechargeable batteries may result in significant cost savings over alkaline batteries.
Do RAYOVAC® Recharge and Recharge Plus need to be charged right out of the package before using?
No. New Recharge and Recharge Plus batteries are charged and ready to use, right out of the package!
My batteries get warm during charging. Is this okay?
Yes. The batteries will get warm during charging but will cool quickly after recharging. This is a normal occurrence and no cause for concern.
Do RAYOVAC® Rechargeable batteries need to be charged in a special charger?
No, RAYOVAC® Rechargeable batteries will charge in any charger that can charge NiMH batteries, even a charger that you already own.
Do RAYOVAC® Rechargeable Batteries need to be charged in a RAYOVAC® brand charger?
No, all RAYOVAC® Rechargeable Batteries can be charged in any charger. However, we recommend using RAYOVAC® chargers.
Do RAYOVAC® batteries have to be fully drained before recharging because they have "memory"?
No. There are absolutely no memory problems with RAYOVAC® Rechargeable batteries. They can be recharged after a few hours of use or when convenient, with no effect on performance or battery life.