Panasonic HR-3U AA Rechargeable Battery - 2700 mAh - NiMH - 4 pcs
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Product Information
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The Panasonic HR-3U AA Rechargeable Battery is designed for users of high-drain devices like digital cameras and advanced remote controls who need reliable, long-lasting power. Its key benefit is the high 2700 mAh capacity, offering extended use between charges, though users must have a compatible NiMH charger. This guide covers its features, performance, setup, and care.
All features
| Model Part Number | 139218 |
|---|---|
| Brand | Panasonic |
Extended Product Information
FAQs
Are these batteries compatible with devices that use alkaline AA batteries?
Yes, in most cases. They are the same AA size. However, the voltage is slightly lower (1.2V vs 1.5V), which might affect performance in some very sensitive electronics. Always check your device manual.
What type of charger do I need for these batteries?
You need a charger specifically designed for NiMH (Nickel-Metal Hydride) AA rechargeable batteries. Do not use chargers for other battery chemistries like NiCd or Li-ion.
How long do these batteries typically last on a single charge?
Battery life varies greatly depending on the device's power consumption. However, the 2700 mAh capacity is designed for extended use in high-drain applications compared to lower-capacity batteries.
Can I use these batteries in my digital camera?
Yes, these batteries are particularly well-suited for digital cameras due to their high capacity, allowing for more shots per charge.
How many recharge cycles can I expect?
The number of recharge cycles varies with usage and care, but NiMH batteries generally offer hundreds of recharge cycles under normal conditions.
How should I store the batteries if I'm not using them for a while?
Store them in a cool, dry place. For long-term storage (over a month), it's best to charge them to about 50% capacity to minimize self-discharge.
Do I need to fully discharge the batteries before recharging?
No, NiMH batteries do not suffer from the 'memory effect' that older NiCd batteries did. You can recharge them at any time, regardless of their current charge level.
Troubleshooting
Battery not charging
Ensure the charger is compatible with NiMH AA batteries and that the batteries are inserted correctly with proper polarity. Clean the charger contacts and battery terminals.
Device not powering on or working intermittently
Check that batteries are fully charged and inserted with correct polarity. Try a different set of charged batteries to rule out a battery issue. Ensure the device is compatible with 1.2V NiMH batteries.
Short battery life after charging
The batteries may have reached the end of their usable life cycle. Ensure you are using a suitable charger and not over-discharging the batteries. Check for device power-saving settings.
Batteries seem to lose charge quickly when stored
This can be due to the natural self-discharge rate of NiMH batteries. For long-term storage, consider charging them to about 50% capacity. Ensure they are stored in a cool environment.
Pros and Cons
Pros
- High capacity (2700 mAh) for extended device runtime.
- Rechargeable, offering long-term cost savings and reduced waste.
- Suitable for power-hungry devices like digital cameras.
- Comes in a convenient pack of four.
- Standard AA size ensures wide compatibility with many devices.
Cons
- Requires a dedicated NiMH charger (not included).
- Slightly lower voltage (1.2V) than alkaline batteries (1.5V), though generally not an issue.
- Self-discharge rate can be higher than some other battery technologies if stored for long periods.
- Initial cost is higher than single-use alkaline batteries.
Setup, Compatibility & Care
Setup: Ensure you have a compatible NiMH battery charger. Insert the batteries into the charger according to the polarity markings (+/-). Once fully charged, insert them into your device, observing the correct polarity.
Compatibility: These are AA-sized, 1.2V NiMH rechargeable batteries. They are compatible with most devices that use AA batteries, especially those designed for rechargeable types. However, always check your device's manual to confirm compatibility with NiMH technology and AA size.
Care:
- Charging: Always use a charger specifically designed for NiMH AA batteries. Avoid overcharging.
- Storage: Store charged batteries in a cool, dry place. If storing for an extended period, charge them partially (around 50%) to minimize self-discharge and potential degradation.
- Cleaning: If the battery contacts appear dirty, gently wipe them with a clean, dry cloth or a pencil eraser. Avoid using liquids.
- Disposal: Dispose of old or damaged batteries responsibly according to local electronic waste regulations.