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)

• 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

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

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 5000 cycles Min. 550 mAh
• AA: BK-3LCC 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 are sold in Japan are 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. 

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.