Eneloop Panasonic K-KJ55MC84CZ Power Pack, 8AA and 4AAA with CC55 quick charger
Quick take
This power pack bundles 8 AA and 4 AAA Panasonic eneloop NiMH rechargeable batteries with the CC55 charger. It is built for convenient, fast recharging, including mixed charge levels, thanks to individual charging and separate LED indicators per slot. The main caveat is that it is specifically for AA/AAA NiMH batteries, so it will not work with lithium formats or other battery sizes.
Pros and cons
Pros
- Includes both AA and AAA eneloop batteries (8 AA, 4 AAA) plus a CC55 charger.
- Individual charging for each battery, with 4 separate LED indicators (green, orange, red) for charge level.
- Pre-charged cells are ready to use out of the box, with long-term charge retention.
- Quick charging targets, including fully charging 4 AA batteries in about 3 hours and 2 AA or 2 AAA in about 1.5 hours.
Cons
- Designed for AA/AAA NiMH eneloop batteries only, not other sizes or battery chemistries.
- Batteries are supplied in a fixed mix (more AA than AAA), which may be extra if you mostly use one size.
- Some devices may not read rechargeable battery state the same way as disposables, so low-battery behavior can vary by device.
What buyers think
Buyer-review evidence is generally consistent around reliability and convenience. Many users describe the kit as a practical rechargeable solution for common AA/AAA devices (including controllers and everyday electronics), and they highlight the charger’s straightforward “slot-by-slot” charging status. Several reviews focus on the LED indicators being helpful for understanding charging progress without guessing, and on the overall durability and trusted eneloop performance over time. Review detail is limited for more technical performance metrics, but the recurring themes point to a low-hassle charging experience and a good day-to-day value for users who rely on AA and AAA power.
What is included, and who this kit is for
The eneloop K-KJ55MC84CZ power pack is essentially a starter system: you get a total of 12 rechargeable batteries (8 AA and 4 AAA) plus the CC55 quick charger.
This makes it a good fit if you want one setup for the devices in your home that commonly use AA or AAA cells, such as remotes, game controllers, wall clocks, small flashlights, wireless peripherals, and other “everyday” electronics.
It is especially convenient if you do not always recharge batteries all at the same time. The charger is designed to handle batteries with different remaining charge levels by charging them individually.
Charger features that matter in real use
Individual charging and separate LED status
The CC55 charger individually charges each installed AA or AAA battery, with its own LED indicator. The lights are intended to show the current charge level for each battery: green for 80% to 100% charged, orange for 20% to 80%, and red for 20% or less.
This is useful for mixed battery situations, for example if one device has been running down for longer than another.
Speed expectations (quick top-ups for multiple batteries)
Panasonic lists quick charging times designed for common configurations. A fully discharged set of 4 AA batteries is targeted at about 3 hours. Smaller sets, like 2 AA or 2 AAA, are listed at up to about 1.5 hours.
That makes the kit more appealing than slow chargers when you want to get devices back online quickly, such as before a trip or after a weekend of low-battery reminders.
Battery performance, capacity, and long-term charge retention
Ready-to-use pre-charged cells
The batteries come pre-charged at the factory and are intended to be ready to use out of the package. They are designed to maintain up to 70% of their charge after 10 years when not in use.
NiMH eneloop cells with published capacity ranges
Panasonic specifies typical and minimum capacities for the included batteries. The AA eneloop cells are listed with up to 2000mAh typical (1900mAh minimum). The AAA cells are listed with up to 800mAh typical (750mAh minimum).
They are rechargeable up to 2100 times and are rated for performance in a wide temperature range (down to -4°F).
Pros and cons in plain terms
Pros
- Convenient bundle for households that use AA and AAA, with 8 AA plus 4 AAA included.
- Individual charging plus per-slot LED indicators reduces the guesswork during multi-battery top-ups.
- Pre-charged eneloop batteries are designed to be usable right away and maintain long-term charge while stored.
- Quick charger timing is aligned with everyday needs, like recharging a set before use.
Cons
- It is a NiMH AA/AAA charger kit, so it does not cover other battery sizes or lithium chemistries.
- If your devices overwhelmingly use only AA or only AAA, the included mix may leave you with more of the less-used size.
- Low-battery indicators on some devices may not perfectly reflect rechargeable battery behavior, which is a compatibility factor to consider for devices that rely on fuel-gauge style readings.
Is this kit worth it for you?
Choose the Eneloop Panasonic K-KJ55MC84CZ if you want a dependable AA/AAA rechargeable setup with:
- Both AA and AAA batteries included in one purchase
- A charger that charges batteries individually and shows charge status clearly
- Fast enough recharge targets for practical daily use
- Long shelf-life orientation for batteries you might store for remotes and emergency gear
Avoid it (or consider a different format) if you need non-AA/AAA sizes, want a charger for lithium batteries, or your devices have unusual compatibility requirements for battery type and state reporting.
If you are ready to price-check, you can also confirm the latest availability here: Buy on Amazon.
Price and availability
The kit is typically sold as a bundled power pack (12 rechargeable batteries plus the CC55 charger). Pricing can vary by retailer and bundle timing, so it is worth checking the current listing for the best overall value per battery and charger included.
FAQ
Does the charger work with AA and AAA batteries?
Yes. The CC55 quick charger is designed to charge eneloop AA and AAA NiMH rechargeable batteries, and it can charge up to four batteries at a time.
Are the batteries pre-charged, or do I need to charge them first?
The included eneloop AA and AAA batteries are pre-charged at the factory and are intended to be ready to use out of the package.
How do the LED indicators work?
The charger uses separate LED indicators for each charging slot. Green indicates about 80% to 100% charged, orange indicates 20% to 80% charged, and red indicates 20% or less charged. When a battery reaches a completed level for that slot, the LED turns off for that cell.
How long does it take to charge?
Panasonic lists approximately 3 hours to charge a fully discharged set of 4 AA batteries, and up to about 1.5 hours for 2 AA or 2 AAA batteries.
How many times can the batteries be recharged?
Panasonic rates eneloop batteries up to 2,100 recharge cycles.
Will this work for devices that use rechargeable batteries?
It should work for devices that accept AA or AAA NiMH rechargeable batteries. If your device depends heavily on a disposable-battery fuel gauge readout, it may display charge level differently with rechargeable cells, but the batteries are intended for reliable everyday use.
Specifications
| Product Title | Eneloop Panasonic K-KJ55MC84CZ Power Pack; 8AA, 4AAA, and Advanced Battery 3 Hour Quick Charger |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Chargers |
| Brand | Panasonic |
| Manufacturer | eneloop |
| Model Number | K-KJ55MC84CZ |
| Item Weight | 13.78 ounces |
| Number of Batteries | 12 AA batteries required. |
| Global Trade Identification Number | 00073096902633 |
| UPC | 073096902633 |
| Built-In Media | rechargeble batteries and charger |
| Warranty Description | This product is guaranteed to be free from defects in materials and workmanship |
| Item Type Name | Panasonic K-KJ55MC84CZ eneloop Power Pack; 8AA, 4AAA, and Advanced Battery 3 Hour Quick Charger |
| Battery Capacity | 800 Milliamp Hours |
| Voltage | 5 Volts |
| Reusability | Rechargeable |
| Compatible Phone Models | Smart phone |
| Unit Count | 1.0 Count |
| Battery Weight | 268 Grams |
| Item Dimensions | 0.4 x 0.4 x 1.74 inches |
| Antenna Location | Phone, Tablet, iphone |
| Battery Cell Type | NiMH |
| Battery Cell Composition | NiMH |
| Recommended Uses For Product | Phone, Tablet, iphone |
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