NI-MH AAA Rechargeable Battery 1.2V 550mAh 4-Pack (hhr-55aaabu)
Quick take
This 4-pack of NiMH AAA rechargeable batteries (1.2V, 550mAh) is a practical choice for Panasonic cordless phones that use AAA cells, plus everyday AAA devices like remote controls and similar electronics. A key buying caveat is that real-world runtime depends on the power draw of your specific device, so some devices will drain any rechargeable AAA set faster than you may expect.
Pros and cons
Pros
- Designed for common Panasonic cordless phone AAA models, including multiple KX-TG, KX-TGF, KX-TGA, and KX-TGD series.
- Rechargeable NiMH AAA format (1.2V, 550mAh) for reducing reliance on disposable batteries.
- Factory pre-charged batteries, with guidance that optimal performance may require a few charge-use cycles.
- Recyclable, with the listing stating rechargeable up to 2500 times and relatively low self-discharge.
Cons
- Capacity-based expectations vary by device, since high-drain electronics can shorten runtime even with good cells.
- Charging time depends on charger type, with slow-charge guidance suggesting up to about 14 to 16 hours for a full charge.
What buyers think
Buyer-review evidence is broadly positive but not detailed enough to identify performance differences between battery brands or capacities. The review themes that do show up consistently are that the batteries work as intended in cordless phone and remote use, feel well-made, and recharge repeatedly without obvious failures over time. One recurring type of comment notes that battery life can vary by device, which aligns with the reality that some electronics draw power much faster than others.
What these batteries are and what they’re for
These are rechargeable NiMH AAA batteries rated at 1.2V and 550mAh, sold as a 4-pack. They are positioned for use in Panasonic cordless phones that require AAA rechargeable cells, and also fit other AAA applications like remotes and general electronics.
Compatibility: will they work in your Panasonic phone?
The listed compatibility is broad for Panasonic models that use AAA batteries, including many members of these families: KX-TGF340/350/370/380, KX-TGA101/430/930/935, KX-TGF575S, KX-TGE433B, KX-TGF352N, KX-TG1032/33/34, KX-TG823x, KX-TG63xx, and multiple KX-TGD562/563/564 and KX-TGDA52/51 variations.
If your Panasonic device is specified for AAA (1.2V NiMH) rechargeable batteries, these should be a straightforward swap. If your device uses a different battery type or size, double-check the battery compartment labeling before purchasing.
Charging and setup expectations
The batteries are described as pre-charged at the factory, but the listing also recommends charging and using them 3 to 4 times for best performance. Charging times depend on your charger:
- Standard slow charge (0.1C = 40mA): full charge time is listed at about 14 to 16 hours.
- Standard fast charge (0.2C = 80mA): full charge time is listed at about 6 to 7 hours.
If you rely on your cordless phone daily, plan charging around your routine, especially if you use a slower charger.
Pros and cons by buyer fit
Best for
- Panasonic cordless phone owners who want a rechargeable AAA replacement in a compatible model lineup.
- Households that use remote controls and similar AAA devices and want to cut down on disposable batteries.
- Buyers who prefer a rechargeable NiMH format that is widely used in everyday home electronics.
You may want to skip these if
- Your device is extremely high-drain and you are expecting the same runtime you’d get from a purpose-built high-capacity pack.
- You cannot accommodate charging downtime, since full-charge times can be several hours depending on charger speed.
How to think about “battery life” with NiMH AAA
NiMH AAA batteries tend to vary in perceived performance mainly because of device power draw. A cordless phone base station or remote that sips power will feel better than something that constantly transmits or displays high power use. If your device drains batteries quickly, that does not automatically mean the cells are defective, it often points to a higher drain design. Reviews reflect this general pattern: some devices naturally use rechargeable AAA batteries at different rates.
Price and availability
The battery set is offered as an in-stock 4-pack with pricing shown on the product page at the time of browsing. If you are comparing options, focus on total cost per usable cell and whether the included quantity matches how many AAA slots you need (for example, one cordless phone base plus extras for remotes).
Verdict
For Panasonic cordless phone models that take AAA NiMH cells, this 4-pack is a solid, compatible option that buyers report works reliably over repeated recharging. The main caution is expectations around runtime, since some devices drain rechargeable AAAs faster than others, and charger speed affects how quickly you can get them back to full use.
FAQ
How many times can these rechargeable AAA batteries be recharged?
The listing states they can be recharged up to 2500 times when used as intended.
What is the voltage and capacity of these AAA batteries?
They are 1.2V NiMH AAA batteries with a stated 550mAh capacity.
Do I need to fully charge them before using them?
They are described as pre-charged, but for best performance the guidance is to charge and use them 3 to 4 times.
How long does it take to charge them?
The listing provides full-charge estimates depending on charger rate: about 14 to 16 hours for slow charging and about 6 to 7 hours for fast charging (based on the stated charge currents).
Are these batteries only for Panasonic cordless phones?
No. They’re intended for Panasonic cordless phone models that use AAA rechargeable batteries, and they can also be used in other devices that accept AAA NiMH 1.2V batteries, such as remote controls and certain electronics.
Why do my rechargeable AAA batteries seem to run out faster in some devices?
Battery life depends heavily on device power draw. High-drain electronics can reduce runtime noticeably, even when the batteries themselves are recharging and performing normally.
Specifications
| Product Title | NI-MH AAA Rechargeable Battery 1.2V 550mah 4-Pack hhr-55aaabu AAA Batteries for Panasonic Cordless Phones, Remote Controls, Electronics |
|---|---|
| Category | Electronics > Accessories & Supplies > Telephone Accessories > Batteries |
| Brand | pingju |
| Manufacturer | pingju |
| Model Name | AAA |
| Model Number | 550mah |
| Number of Batteries | 4 AAA batteries required. (included) |
| UPC | 750440493589 |
| Battery Cell Type | NiMH |
| Battery Capacity | 550 Milliamp Hours |
| Voltage | 1.2 Volts |
| Reusability | Rechargeable |
| Compatible Phone Models | Works for almost all Panasonic phones that use AAA batteries, such as：KX-TGF340/350/370/380 series,KX-TGD22N/220N/223N/224N/225N,KX-TGD562/563/564 series, KX-TGDA52/51 series ,KX-TGE273S/274S/275S/433B series, KX-TGA101/430/930/935 series, KX-TGF575S series, KX-TGF352N series, KX-TG1032/33/34, KX TG823x series, KX-TG63xx series etc. |
| Unit Count | 4.0 Count |
| Battery Weight | 48 Grams |
| Item Dimensions | 3.94 x 2.36 x 0.67 inches |
| Antenna Location | Phone, Remote Control Vehicle, TV Remote |
| Battery Cell Composition | NiMH |
| Recommended Uses For Product | Phone, Remote Control Vehicle, TV Remote |
Available variants
Size
- 550-6
- 550-4
- 550-8
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