larryg
Electrical
- Feb 23, 2001
- 25
Hi all,
I'm in the process of designing a battery powered device to be used in the car. The plan calls for rechargeable batteries with 12V from the car to provide charging. However, I would also like the option of using alkaline batteries. The problem arises if a customer has inserted alkalines in the device and connects the charger.
How can you determine what type of battery you have? I had thought about internal resistance since alkalines have a much higher impedance than NiMH or NiCD, but measuring the impedance doesn't seem trivial. I have seen some battery chargers on the market that determine the type of battery, but I'm not sure how they go about doing that. Perhaps they develop a quick charge-discharge profile?
Any thoughts? Thanks for all your inputs.
Regards,
Larry G
I'm in the process of designing a battery powered device to be used in the car. The plan calls for rechargeable batteries with 12V from the car to provide charging. However, I would also like the option of using alkaline batteries. The problem arises if a customer has inserted alkalines in the device and connects the charger.
How can you determine what type of battery you have? I had thought about internal resistance since alkalines have a much higher impedance than NiMH or NiCD, but measuring the impedance doesn't seem trivial. I have seen some battery chargers on the market that determine the type of battery, but I'm not sure how they go about doing that. Perhaps they develop a quick charge-discharge profile?
Any thoughts? Thanks for all your inputs.
Regards,
Larry G
