Rayovac Hybrid batteries

[RHybrid]

I just bought these types of batteries for the first time - rechargables in general at least. I am using the charger which can charge 2AA and 2AAA batteries at the same time. I have a few questions for those on the board who have used them:

The batteries work fine. But how long does it take you to recharge your batteries using this charger? It took me about 8-10 hours to have both my AAA batteries recharge to 100% again

The charger itself doesn't seem to operate unless I put in ALL the batteries it came with. For example, I bought the charger that came with 2AA and 2AAA batteries. I have only used the 2 AAA batteries, not the 2AA so far. But, the device does not seem to recharge unless I put in all 4 batteries, so that the red lights are turned on. Without all 4 batteries in the unit, the red lights don't turn on. In turn, I am worried about the 2AA batteries that don't need to be recharged at all because I haven't used them yet. Will they burn or burst because of repetitive charges that they don't need?

If anyone uses this charger, how do you charge it? Do the red lights need to turn on? Is it possible to charge just ONE battery?

This device does not have an instruction manual either, so thanks for any help.

 

[tarponbill]

That's how mine works as well, all four batteries or won't charge. It is not a single channel charger, just appears to be a simple timed charger. I just bought more Hybrid batteries, got the $5 refund coupon, and then a package of Eneloops with their charger, which is a single channel and use that for all charging. The Eneloop charger will charge 1 to 4 batteries, it costs $20 at Walmart instead of the $9 for the Hybrid.

The Hybrids were cheap and in the several months I have used them performed well.

Update: Oops, mine charges pairs, not singles, not four at a time ... I quit using it so fast, I forgot how it worked. The batteries seemed to get way to hot when using this charger. The Eneloop charger and the subsequent 15 minute Energizer charger I bought, the batteries didn't heat up anywhere near the same.

 

[ltiu]

Weird, my Hybrid recharger has four bays grouped into twos. I can recharge 2 AA or AAA minimum at a time. It comes with one red LED for every two bays. So if I recharge only two batteries, only one red LED (out of the two) light up.

My charger I believe is a dumb charger, meaning the red LED lights will stay on for 8 hours then go out. It does not mean the batteries need to be charged for 8 hours.

While charging, touch the batteries every hour, if they feel hot, stop charging. Hot batteries mean these are fully charged. My Hybrids typically only need 2 hours of charge at a time since I don't use them much before I recharge them - I do not use then all up down to nothing before each charge.

 

[oldvultureface]

PDF manuals for Rayovac chargers are available at:

http://www.rayovac.com/recharge/hybrid_manuals.shtml

 

[RHybrid]

Weird, my Hybrid recharger has four bays grouped into twos. I can recharge 2 AA or AAA minimum at a time. It comes with one red LED for every two bays. So if I recharge only two batteries, only one red LED (out of the two) light up.

My charger I believe is a dumb charger, meaning the red LED lights will stay on for 8 hours then go out. It does not mean the batteries need to be charged for 8 hours.

While charging, touch the batteries every hour, if they feel hot, stop charging. Hot batteries mean these are fully charged. My Hybrids typically only need 2 hours of charge at a time since I don't use them much before I recharge them - I do not use then all up down to nothing before each charge.

Can you charge only one battery at a time? As my situation is right now, I have 3 batteries that is fully charged, and the 4th battery, an AAA, that needs to be recharged. However I am not sure if I have to put in all batteries in order to have only ONE recharged because the red LED light doesn't turn on without all batteries in the unit.

Can batteries burst if they are put in the recharger but are already fully charged?

 

[SilverFox]

Hello RHybrid,

Welcome to CPF.

The instruction manual that Oldvulcherface referenced indicates that the charger can not charge individual cells, only pairs.

Yes, batteries can burst if you charge one that has already been charged, however it is rare, and you need a higher current level than most of these chargers are capable of.

Tom