I originally used the rechargeable battery packs for my Xbox One controllers, which I would end up having to recharge after a very short amount of playtime. The OEM Xbox One battery pack from Microsoft (that comes with a USB charger cable and costs $30) provided roughly 8 hours of battery life. However, these Eneloop batteries lasted nearly 32 hours on a full charge and cost almost half as much as a single controller battery pack. I would highly recommend these if you want longer running time with your battery-powered devices.
I have heard of Eneloop Pro, and those last even longer on a full charge but the number of times they can be recharged before they fully die is fewer, which is why I went with the regular pack.
Basically, if you want batteries that can be recharged many times before they die (but still last fairly long on a single charge), get these. If you want batteries that keep your devices powered even longer on a single charge, then get the Eneloop Pro.
I'll update this review when my batteries fully die just to give better insight about how much longer you can actively use these.
Update: 1/10/2022
The batteries haven't actually died yet, but I just wanted to let people know they still work.
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From the manufacturer
eneloop Ready to Use Rechargeable Battery
*eneloop charge capacity and mAh estimates based on Panasonic internal IEC 61951-2(7.3.2) testing. **Recharge cycles based on testing method established by IEC 61951-2(7.5.1.3). ***Solar energy charging as certified by The Green Energy Certification Center. eneloop batteries need a charger to be recharged. Panasonic Ni-MH battery chargers are recommended. ****Recommended storage conditions 68 degrees F. Results may vary based on conditions of storage and use.
eneloop
Ready to Use Ni-MH Rechargeable Batteries
eneloop Ni-MH 'Low Self Discharge' batteries utilize Panasonic’s advanced rechargeable cell technology allowing them to be recharged up to 2100 times.** These battery cells are ideal for all household products including flashlights, wireless gaming devices, digital camera flash units, and wireless mouse and keyboards.
- Recharge up to 2100 times**
- Maintain 70% charge for up to 10 years*
- Up to 2000mAh* (AA) / 800mAh* (AAA)
- Pre-charged using solar power***
- Temperature performance down to -4 F****
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eneloop 2100 cycle rechargeable Ni-MH batteries maintain 70% of their charge for up to 10 years (when not in use and stored properly).* |
Improvements to the conductive surface layer of the active (positive) electrode material (made primarily from nickel-metal hydride) produce greater conductivity and durability. Limiting the degradation of the conductive layer increases the number of times that eneloop batteries can be recharged. ..up to 2100 times.** |
eneloop’s unique "Clean Energy Loop" initiative is a reality. All eneloop and eneloop pro batteries are pre-charged at the factory in Japan using power generated from solar energy.*** This process is certified twice a year by The Green Energy Certification Center. |
Keep your tactical flashlights, walkie-talkie radios, battery powered lanterns, cameras and other devices powered in the winter. eneloop and eneloop pro batteries deliver exceptional performance at extreme low temperatures, down to –4°F.**** |
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| eneloop AA | eneloop AAA | eneloop AA | eneloop AAA | |
| Capacity | up to 2000mAh* | up to 800mAh* | up to 2550mAh* | up to 950mAh* |
| Cycles / Recharges | up to 2100** | up to 2100** | up to 500** | up to 500** |
| Storage Life | Hold 70% charge up to 10 years | Hold 70% charge up to 10 years | Holds 85% charge up to one year* | Holds 85% charge up to one year* |
| Low Temp Rating | Down to -4 degrees F | Down to -4 degrees F | Down to -4 degrees F | Down to -4 degrees F |
| Chemistry | LSD Ni-MH | LSD Ni-MH | LSD Ni-MH | LSD Ni-MH |
| Recyclable | Yes | Yes | Yes | Yes |
| Country of Origin | Batteries made in Japan Charger made in China Spacers made in China | Batteries made in Japan Charger made in China Spacers made in China | Batteries made in Japan Charger made in China | Batteries made in Japan Charger made in China |
Compare with similar items
 | Amazon Basics 12-Pack AA Rechargeable Batteries, Performance 2,000 mAh Battery, Pre-Charged, Recharge up to 1000x | Panasonic BK-3MCCA4BA eneloop AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 4 Pack | Panasonic BK-3MCCA8BA eneloop AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8 Pack | Panasonic K-KJ17M3A4BA Advanced Individual Cell Battery Charger Pack with 4 AAA eneloop 2100 Cycle Rechargeable Batteries | Panasonic BK-4MCCA8BA eneloop AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8 Pack | |
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| Customer Rating | (9388) | (5601) | (4651) | (12308) | (1198) | (17054) |
| Price | $22.37 | $15.40 | $12.99 | $18.99 | $19.08 | $16.99 |
| Sold By | Adorama | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
| Brand Name | eneloop | Amazon Basics | Eneloop | Eneloop | Eneloop | Eneloop |
| Size | 4-Pack | 12 Count | 4-Pack | 8-Pack | 4-Pack | Standard |
Customer reviews
When I first heard about Sanyo's new type of rechargeable batteries in 2005 I bought a set of them immediately together with the original charger. I still use those batteries on an everyday basis and though their ability to hold a charge has diminished a bit, they still work acceptably. At that time you had to charge all four batteries (and you couldn't mix AA with AAA) and the charge time was roughly 3-4 hours.Since then Eneloop has undergone lots of changes as has the product itself. Specifically what those changes are depends on where in the world you live. If you live in the USA the product you buy that's intended for the U.S. market is sold by Panasonic (one of the two owners now of the Eneloop trademark ... Sanyo is out of the picture) and the batteries are, or should be, made in Japan with the chargers being made in China. This particular set makes a big point that recharging time for a full set of four is 7 hours; charging time used to be underplayed previously. The reason may be that there is another, harder to find and more expensive "advanced" charger that quotes a 3 hour recharge time. What they don't make obvious is that if you are only charging 1 or 2 AA batteries the charge time for both chargers is identical ... 3 hours. You benefit from the faster charger time with the new premium charger only if you are charging 4 batteries at the same time.As long-time Eneloop customers are probably aware, there are literally pages of batteries with the Eneloop brand name being sold. Some have been reported to be counterfeit. Some are made in Chinese factories and intended to be sold outside of the USA. Some may have the Fujitsu brand on them and some may be ancient (pre-2009) Sanyo batteries. Do NOT buy those ... they are obsolete.This product checks out as legit and they were close to 100% pre-charged. As I discovered after getting 11+ years use out of my original set, the estimate of how many times they can be recharged is just that, only an estimate. Your useful life will vary depending on temperature and humidity conditions, what device you're using them in, how far you deplete them before recharging them, which if the several models of chargers you recharge them in, etc.If you have never before owned Eneloop batteries, I recommend starting with this kit of four AA cells with charger. I consider it a 5-star product.
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Reviewed in the United States on August 4, 2020
Reviewed in the United States on December 23, 2018
Reviewed in the United States on October 12, 2016
When I first heard about Sanyo's new type of rechargeable batteries in 2005 I bought a set of them immediately together with the original charger. I still use those batteries on an everyday basis and though their ability to hold a charge has diminished a bit, they still work acceptably. At that time you had to charge all four batteries (and you couldn't mix AA with AAA) and the charge time was roughly 3-4 hours.
Since then Eneloop has undergone lots of changes as has the product itself. Specifically what those changes are depends on where in the world you live. If you live in the USA the product you buy that's intended for the U.S. market is sold by Panasonic (one of the two owners now of the Eneloop trademark ... Sanyo is out of the picture) and the batteries are, or should be, made in Japan with the chargers being made in China. This particular set makes a big point that recharging time for a full set of four is 7 hours; charging time used to be underplayed previously. The reason may be that there is another, harder to find and more expensive "advanced" charger that quotes a 3 hour recharge time. What they don't make obvious is that if you are only charging 1 or 2 AA batteries the charge time for both chargers is identical ... 3 hours. You benefit from the faster charger time with the new premium charger only if you are charging 4 batteries at the same time.
As long-time Eneloop customers are probably aware, there are literally pages of batteries with the Eneloop brand name being sold. Some have been reported to be counterfeit. Some are made in Chinese factories and intended to be sold outside of the USA. Some may have the Fujitsu brand on them and some may be ancient (pre-2009) Sanyo batteries. Do NOT buy those ... they are obsolete.
This product checks out as legit and they were close to 100% pre-charged. As I discovered after getting 11+ years use out of my original set, the estimate of how many times they can be recharged is just that, only an estimate. Your useful life will vary depending on temperature and humidity conditions, what device you're using them in, how far you deplete them before recharging them, which if the several models of chargers you recharge them in, etc.
If you have never before owned Eneloop batteries, I recommend starting with this kit of four AA cells with charger. I consider it a 5-star product.
Since then Eneloop has undergone lots of changes as has the product itself. Specifically what those changes are depends on where in the world you live. If you live in the USA the product you buy that's intended for the U.S. market is sold by Panasonic (one of the two owners now of the Eneloop trademark ... Sanyo is out of the picture) and the batteries are, or should be, made in Japan with the chargers being made in China. This particular set makes a big point that recharging time for a full set of four is 7 hours; charging time used to be underplayed previously. The reason may be that there is another, harder to find and more expensive "advanced" charger that quotes a 3 hour recharge time. What they don't make obvious is that if you are only charging 1 or 2 AA batteries the charge time for both chargers is identical ... 3 hours. You benefit from the faster charger time with the new premium charger only if you are charging 4 batteries at the same time.
As long-time Eneloop customers are probably aware, there are literally pages of batteries with the Eneloop brand name being sold. Some have been reported to be counterfeit. Some are made in Chinese factories and intended to be sold outside of the USA. Some may have the Fujitsu brand on them and some may be ancient (pre-2009) Sanyo batteries. Do NOT buy those ... they are obsolete.
This product checks out as legit and they were close to 100% pre-charged. As I discovered after getting 11+ years use out of my original set, the estimate of how many times they can be recharged is just that, only an estimate. Your useful life will vary depending on temperature and humidity conditions, what device you're using them in, how far you deplete them before recharging them, which if the several models of chargers you recharge them in, etc.
If you have never before owned Eneloop batteries, I recommend starting with this kit of four AA cells with charger. I consider it a 5-star product.
Images in this review
Reviewed in the United States on May 15, 2020
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Reviewed in Mexico on August 11, 2019
