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As of May 2018
Monthly battery export and import statistics
(source: Trade statistics released by the Ministry of Finance, Japan)

Unit: 1,000 (Quantity), million JPY (Amount)
  May 2018 Accumulated total from January to May 2018
Quantity Amount y-o-y change in quantity y-o-y change in amount Quantity Amount y-o-y change in quantity y-o-y change in amount
Total of all batteries (exported) 211,997  46,956  103%  125%  1,069,377  240,536  99%  117% 
Total of primary batteries 89,587  2,496  93%  107%  447,370  12,476  92%  98% 
Zinc carbon 19  1884%  76%  19  1284%  8% 
Alkaline 1,934  44  46%  50%  17,356  334  140%  116% 
Silver oxide 34,874  474  86%  98%  188,680  2,572  83%  93% 
Lithium 52,661  1,759  102%  103%  240,977  8,626  98%  93% 
Zinc air 100  336  62%  61% 
Others 218  7%  346%  940  28%  261% 
Total of secondary batteries 122,410  44,459  112%  126%  622,007  228,060  105%  119% 
Lead-acid 155  1,166  99%  101%  886  7,753  104%  126% 
Nickel cadmium 1,239  133  102%  104%  8,996  917  97%  101% 
Nickel iron
Nickel metal-hydride 11,553  8,068  84%  118%  62,377  39,522  94%  114% 
Lithium ion 102,100  24,151  116%  119%  505,000  124,912  104%  106% 
Others 7,364  10,940  125%  160%  44,748  54,954  140%  166% 
Total of all batteries (imported) 114,897  16,122  115%  126%  594,032  79,886  100%  123% 
Total of primary batteries 106,239  1,879  115%  116%  552,832  8,864  100%  96% 
Zinc carbon 12,735  122  104%  104%  70,353  729  101%  96% 
Alkaline button 3,328  24  106%  84%  14,414  111  105%  99% 
Alkaline (exc. button type) 69,208  893  114%  106%  377,725  4,775  98%  91% 
Silver oxide 150  131%  72%  975  31  208%  166% 
Lithium 15,034  708  127%  132%  62,315  2,678  95%  109% 
Zinc air 5,754  122  136%  171%  26,935  486  127%  113% 
Others 32  56%  52%  114  53  110%  23% 
Total of secondary batteries 8,658  14,243  114%  128%  41,201  71,022  109%  128% 
Lead-acid 674  3,148  109%  108%  3,316  15,329  97%  101% 
Nickel cadmium 109  173  106%  111%  340  763  103%  109% 
Nickel iron 0%  0% 
Nickel metal-hydride 1,792  387  107%  92%  9,684  2,031  97%  95% 
Lithium ion 5,948  9,343  117%  141%  27,177  47,059  115%  147% 
Others 134  1,193  196%  116%  684  5,840  154%  108% 
Total values may differ because they are rounded off to the nearest integer.

As of 2012, the "Others" category of imported secondary batteries has been separated into Nickel metal-hydride, Lithium ion and Others.
As of 2016, the "Alkaline" category of imported primary batteries has been separated into "Alkaline button" and "Alkaline (exc. button type)" categories.