ENELOOP AA, ENELOOP AAA, C, D: 2005-2024

Sanyo Eneloop 1st generation

• AAA: HR-4UTG 1000 cycles Rated 800 mAh. Min. 750 mAh
• AA: HR-3UTG 1000 cycles Rated 2000 mAh. Min. 1900 mAh
• C: HR-2UTG 1000 cycles Rated 3200 mAh. Min. 3000 mAh
• D: HR-1UTG 1000 cycles Rated 6000 mAh. Min. 5700 mAh

• Eneloop AA and eneloop AAA: Claimed 85% capacity left after 1 year (*3)
• Available in 2, 4, 8 and 12 pack and in combination with charger
• Launch date AA and AAA: November 2005) (*2)
• C and D size: No mentioning of claimed capacity after 1 year (*3)
• Launch date C and D: (around April) 2007 (*1 )but they were only available to the Japanese market
• These batteries can be used in weather as low as -10 degrees Celsius
  
• Made in Japan

Sanyo Eneloop 2nd generation

• AAA: HR-4UTGA 1500 cycles Rated 800 mAh. Min. 750 mAh
• AA: HR-3UTGA 1500 cycles Rated 2000 mAh. Min. 1900 mAh

• Not available in C or D size
• AA and AAA: Claimed 75% capacity left after 3 years (*3)
• Launch date AA and AAA: November 2009) (*2)
• The first special edition set came on the market in 2010 to celebrate eneloop`s 5th anniversary.
• For the full line-up of all Eneloop limited / special editions see https://eneloop101.com/batteries/eneloop-limited-edition/ 
• Can be used in weather as low as -20 degrees Celsius.
• Made in Japan

Sanyo Eneloop 3rd generation

• AAA: HR-4UTGB 1800 cycles Rated 800 mAh. Min 750 mAh
• AA: HR-3UTGB 1800 cycles Rated 2000 mAh. Min 1900mAh

• Not available in C or D size
• AA and AAA: Claimed 70% capacity left after 5 years (*3)
• Launch date AA and AAA: November 2011 (*2)
• An interesting observation is that this generation has the most special editions.
• Made in Japan

Panasonic Eneloop 4th generation

• AAA: BK-4MCC (A/E) 2100 cycles Rated 800 mAh Min. 750 mAh
• AA: BK-3MCC (A/E) 2100 cycles Rated 2000 mAh Min. 1900 mAh (AA-size)
• C: BK-2MGC 1000 cycles Min. 3000 mAh (C-size)
• D: BK-1MGC 1000 cycles Min. 5700 mAh (D-size)

• AA and AAA: Claimed 70% capacity left after 5 years (*3)
• C and D: in Japan they don`t show the rated/nominal capacity, therefore only the minimum capacity is shown (*4)
• C and D: Claimed 70% capacity left after 5 years (*3)
• C and D: Only available in Japan
• Launch date AA and AAA: April 2013  (*2)
  See the Japanese announcement for Panasonic Eneloop (Japanese market only) in 2014 they became available on the western market, without the Panasonic logo.
• BK-3MCCE and BK-3MCCA (*5)
• Panasonic Eneloop or Sanyo Eneloop? For more information see: https://eneloop101.com/faq/ 
• Made in Japan

Panasonic Eneloop 4th generation (Updated 2015)

• AAA: BK-4MCC A/E 2100 cycles Min. 750 mAh (AAA-size)
• AA: BK-3MCC A/E 2100 cycles Min. 1900 mAh (AA-size)

• AA and AAA: Claimed 70% capacity left after 10 years (*3/*6)
• Launch date AA and AAA: 2015) (*2/*7)
• Sometimes referred to as 5th generation BUT are not.. These only use a new type of testing standard. 
• BK-3MCCE and BK-3MCCA see *5 on bottom of this page
• Made in Japan

Panasonic Eneloop 5th generation (2022)

• AAA: BK-4MCDE 2100 cycles Min. 800 mAh (AAA-size)
• AA: BK-3MCDE 2100 cycles Min. 2000 mAh (AA-size)
• In Japan*11:
• AAA: BK-4MCDK 600 cycles Min. 800 mAh
• AA: BK-3MCDK 600 cycles Min. 2000 mAh (AA-size)
• C: BK-2MCD 600 cycles Min. 3200 mAh (C-size)
• D: BK-1MCD 600 cycles Min. 6000 mAh (D-size)

• AA and AAA: Claimed 70% capacity left after 10 years (*3/*6)
• Launch date AA and AAA: May 2022) (only in Europe available, so far)
• New packaging: only paper/cardboard
• Made in Japan
• Japan added them in 2023
• *11Japan’s new testing methodology, according to JIS C 8708 2019 (7.5.1.4) where the battery stays at 100% instead of 60% capacity. More info in the FAQ and Charge section

Panasonic Eneloop BK-3MCCCF

• AAA: BK-4MCCF 2100 cycles Min. 750 mAh (AAA-size)
• AA: BK-3MCCF 2100 cycels Min. 1900 mAh (AA-size)

• Same characteristics as standard white Eneloops
• AA and AAA: Claimed 70% capacity left after 10 years (*3/*6)
• Launch date AA and AAA: 2019) 
• Made in Japan

Sanyo Eneloop lite 1st generation

• AAA: HR-4UQ 2000 cycles Rated 600 mAh. Min. 550mAh
• AA: HR-3UQ 2000 cycles Rated 1000 mAh. Min. 900mAh

• Not available in C or D size
• Claimed 75% capacity left after 3 years (*3)
• Launch date: June 2010) (*2)
• In some places, they originally showed 1000 cycles, but soon changed to 2000 cycles without changing the product name.
• Made in Japan

Panasonic Eneloop lite 2nd generation 

• AAA: BK-4LCC (E) 3000 cycles Min. 550mAh
• AA: BK-3LCC (E) 3000 cycles Min. 950mAh

• Not available in C or D size
• Claimed 70% capacity left after 5 years (*3)
• Launch date: 2014/2015 (depending on the market) (*2)
• Worldwide market. These are not sold in Japan anymore
• The Japanese market has had Chinese Eneloop lite since around 2015-2016 (see below)
  EU: AA lite are only available in 2 packs
  EU: AAA lite are available in 2, 3, and 4 packs
  US: Eneloop lite is not officially distributed
  Japan: AA and AAA lite are Only available in 2-packs
• Made in Japan
• Same product coding is used for Chinese Eneloop Lite, so information below, in the Chinese battery section

Panasonic Eneloop lite 3rd generation 

• AAA: BK-4LCD (E) 1500 cycles Min. 680mAh
• AA: BK-3LCD (E) 1500 cycles Min. 1050mAh

• Data now uses the new battery charging standards, which has lowered the cycle count. But the battery has equal or better quality than previous generations
• New standards: Claimed 85% capacity left after 1 year and 70% after 5 years (*3)
• Launch date: 2023 (depending on the market)
• Other markets still use the older naming, BK-3LCCE and BK 4LCCE. Since it uses a different product code, I mention them as being a new generation
• Japan: AA and AAA Lite are now available in 2 and 4-packs
• Made in Japan

Sanyo Eneloop XX / Pro 1st generation

• AAA: batteries don`t exist
• AA: HR-3UWX 500 cycles Rated 2500 mAh. Min 2400 mAh

• Not available in C or D size
• Claimed 75% capacity left after 1 year (*3)
• Launch date: 2011  (*2)
• Eneloop Pro and eneloop XX (*8)
• First available for overseas market, later to the Japanese market
• Made in Japan

Sanyo Eneloop XX / PRO 2nd generation

• AAA: batteries don`t exist
• AA: HR-3UWXA 500 cycles Rated 2500 mAh. Min 2,400 mAh

• Not available in C or D size
• Claimed 75% capacity left after 1 year (*3)
• Launch date: 2012
• Same specs as the 1st gen. Never sold in Japan. Only in certain areas. (*9)
• I believe they are just 1st gen but sold in China. 
• Made in Japan

Sanyo Eneloop XX / PRO 3rd generation

• AAA: HR-4UWXB 500 cycles Rated 950 mAh Min 900 mAh
• AA: HR-3UWXB 500 cycles Rated 2550 mAh Min 2450 mAh

• Not available in C or D size
• Claimed 85% capacity left after 1 year (*3)
• Launch date: October 2012) (*2)
• Rated capacity changed per region
• Made in Japan
• See the 3 different packagings.
  China: Picture shows 2550 mAh  Typical capacity 
  Europe: Picture shows 2450 mAh Minimum capacity
  Japan: Picture shows 2450 mAh Minimum capacity

Panasonic Eneloop PRO 4th generation

• AAA: BK-4HCC 500 cycles Rated 950 mAh Min 900mAh
• AA: BK-3HCC 500 cycles Rated 2550 mAh Min 2450mAh 

• Not available in C or D size
• Claimed 85% capacity left after 1 year (*3)
• Launch date: April 2013 (*2)
• Officially now all called Panasonic Eneloop PRO and not XX
• Made in Japan

Panasonic Eneloop PRO 5th generation

• AAA: BK-4HCDE 500cycles Min 930mAh
• AA: BK-3HCDE 500cycles Min 2500mAh
• AAA: BK-4HCCA 500cycles Rated 980mAh*
• AA: BK-3HCCA 500 cycles Rated 2600mAh*

• Not available in C or D size
• Claimed 85% capacity left after 1 year (*3)
• Launch date: August 2015 (*2)
• No typical capacity is mentioned in Japan, and Europe anymore (*10)
• Made in Japan
• *North America: BK-3HCCA (AA) rated 2600mAh and BK-4HCCA (AAA) rated 980mAh. Same batteries, just different marketing

Sanyo Eneloop PLUS

• AAA: batteries don`t exist
• AA: HR-3UPT 1800 cycles Rated 2000 mAh. Min 1900 mAh

• Not available in C or D size
• Claimed 85% capacity left after 1 year (*3)
• Launch date: August 2011 Announcement date: June 2011 (*2)
• Specs are the same as 3rd generation Eneloop basic. But with an added overheat protection for increased safety. PTC stands for Positive Temperature Coefficient
• These batteries are discontinued, and difficult to find
• Made in Japan

Panasonic Eneloop standard (made in China)

• AAA: BK-4MCCE 2100 cycles. Min. 750 mAh
• AA: BK-3MCCE 2100 cycles. Min 1900 mAh

• Not available in C or D size
• till 2016 AA and AAA: Claimed 65% capacity left after 5 years (*3) This is how you easily can see these are made in China
• from 2016 AA and AAA: Claimed 70% capacity left after 5 years (*3) This is how you easily can see these are made in China the newest ones made in Japan have a 70% capacity claim after 10 years
  So the previous Japanese cells would mention 70% 5 years, so it can be a little confusing in some regions to distinguish Japanese from the Chinese ones. 
• Launch date AA and AAA: 2013 (*2)
• Made in China!

Panasonic Eneloop Lite (Made in China)

• AAA: BK-4LCC (E) 5000 cycles Min. 550 mAh
• AA: BK-3LCC (E) 5000 cycles Min. 900 mAh

• Not available in C or D size
• Only on the Japanese market
• AA and AAA: Claimed 75% capacity left after 3 years (*3)
• Launch date AA and AAA: April 2013 (*2)
• Made in China!
• (I find it strange that only the Lite Eneloops that were sold in Japan until a few years ago were actually made in China, and that the whole Eneloop export market receives Japan-made Lite Eneloops. From 2013 till about 2015-2016 Eneloop lite in Japan were made in Japan. Since then they source Eneloop lite from China for the Japanese market.Since 2023, the Japanese market now also gets Japanese Eneloop Lite 

Sanyo Eneloop battery spacer / converter / adapter

• AA to D: NC-TG D
• AA to C: NC-TG C

• Available separately as well as in battery charger kits.
• Careful with using Eneloop XX / PRO batteries because they do not fit very well, and can damage the battery sleeves.

Panasonic Eneloop battery spacer / converter / adapter

• AA to D: BQ-BS1 (BQ-BS1E)
• AA to C: BQ-BS2 (BQ-BS2E)

• See above explanation
• The real difference is the D-size spacer has now a screw-able end-cap so the AA battery is actually inside the shell. See the difference between the Older style vs Newer style adapter. 
• The name BS1 or BS2 refers to the original Japanese size for Eneloop D and C.