THE LAST BUYThe Durability Standard
Panasonic K-KJ55MC84CZ eneloop Power Pack; 8AA, 4AAA, and Advanced Battery 3 Hour Quick Charger
Electronics

Panasonic K-KJ55MC84CZ eneloop Power Pack; 8AA, 4AAA, and Advanced Battery 3 Hour Quick Charger

Panasonic Eneloop

Tempered
Tempered
$55.92Confidence: high
4.6(1.4k reviews)
Buy on Amazon$55.92

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About This Product

  • LONG LASTING PERFORMANCE: Recharge eneloop AA and AAA rechargeable batteries up to 2100 times
  • POWERFUL NiMH RECHARGEABLE BATTERIES: eneloop AA Ni-MH pre-charged rechargeable battery deliver up to 2000mAh typical, 1900mAh minimum; eneloop AAA rechargeable batteries deliver up to 800mAh typical, 750mAh minimum
  • PRE-CHARGED AND READY TO USE: eneloop AA and AAA rechargeable batteries are pre-charged at the factory using solar power and maintain up to 70% of their charge after 10 years (when not it use)
  • ADVANCED CHARGING CAPABILITES: The Panasonic CC55 battery charger individually charges each eneloop AA and AAA rechargeable battery, resulting in a perfect charge every time
  • 4 INDIVIDUAL LED COLOR INDICATORS: The CC55 battery charger features 4 separate LED charging lights, one for each unique charging station. Remaining battery charge is checked individually; green LED light (80+% charged); orange LED light (20% - 80% charged); red LED light (20% or less charged)
  • QUICK CHARGING TIMES: The CC55 battery charger will charge a fully discharged eneloop 4AA batteries in approximately 3 hours; eneloop 2AA or 2AAA in up to 1.5 hours.
  • SECURE, PROTECTIVE PACKAGING: This package contains 8 eneloop AA rechargeable batteries, 4 eneloop AAA rechargeable batteries (made in Japan), and one CC55 quick rechargeable battery charger, packaged together in the U.S.A.

Why It Lasts

Low self-discharge NiMH chemistry retains up to 70% of charge after 10 years of storage — standard rechargeable batteries lose most of their charge within months. Rated for 2,100 recharge cycles (standard model) or 500 cycles (Pro model with higher capacity). Made in Japan at Panasonic's Osaka factory. The cells maintain consistent voltage throughout discharge rather than the gradual voltage drop that causes devices to slow down. Pre-charged at the factory using solar power. These replaced disposable batteries in the BIFL community years ago and the consensus hasn't changed.

Known Weaknesses

Capacity is lower than standard alkaline batteries (1,900 mAh vs 2,500+ mAh for alkaline AA) — high-drain devices may run shorter between charges. The Pro model (2,550 mAh) only lasts 500 cycles vs the standard's 2,100. NiMH batteries lose about 1% charge per day even with the low self-discharge chemistry. Not suitable for smoke detectors or emergency devices that sit unused for years. The initial cost of batteries plus a quality charger is $30-50. Some cheap chargers can damage the cells — a smart charger (like the Panasonic BQ-CC55 or La Crosse) is worth the investment.

Durability Breakdown

Warranty
3.5
Materials
6.0
Community
9.0
Brand Rep
8.8
Repairability
5.7

Specifications

Product Dimensions0.4 x 0.4 x 1.74 inches
Item Weight13.8 ounces

Data Source

View community discussion →

Quick Stats

Overall Score6.6/10
TierTempered
BrandPanasonic
CategoryElectronics
Confidencehigh
Data Points5/5
4.6(1.4k reviews)
Buy on Amazon$55.92

As an Amazon Associate, we earn from qualifying purchases.

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