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

Unit: 1,000 (Quantity), million JPY (Amount)
  September 2018 Accumulated total from January to September 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) 195,425  49,010  92%  108%  1,935,798  441,527  96%  114% 
Total of primary batteries 90,284  2,509  97%  95%  837,786  22,953  93%  97% 
Zinc carbon 8%  98%  28  1783%  23% 
Alkaline 1,937  42  39%  45%  27,651  580  84%  87% 
Silver oxide 46,021  612  104%  110%  370,263  4,943  85%  95% 
Lithium 41,829  1,576  96%  82%  438,809  15,553  101%  92% 
Zinc air 259  790  114%  108% 
Others 238  277  1409%  441%  244  1,866  931%  218% 
Total of secondary batteries 105,141  46,500  89%  109%  1,098,012  418,574  100%  115% 
Lead-acid 180  1,331  93%  92%  1,620  13,060  101%  113% 
Nickel cadmium 393  69  30%  51%  13,054  1,432  87%  94% 
Nickel iron 0%  0%  2011%  222% 
Nickel metal-hydride 15,140  8,275  104%  119%  117,853  72,250  96%  119% 
Lithium ion 82,719  21,974  89%  92%  886,256  217,187  99%  101% 
Others 6,709  14,850  70%  143%  79,228  114,643  114%  153% 
Total of all batteries (imported) 132,852  15,286  114%  114%  1,050,333  141,380  103%  119% 
Total of primary batteries 124,674  1,831  115%  102%  975,296  16,178  102%  100% 
Zinc carbon 15,628  180  112%  118%  120,341  1,268  102%  96% 
Alkaline button 646  20%  13%  20,130  146  88%  83% 
Alkaline (exc. button type) 95,164  1,178  128%  120%  680,679  8,651  103%  96% 
Silver oxide 227  192%  179%  1,670  55  161%  154% 
Lithium 9,149  408  81%  78%  105,360  4,703  96%  104% 
Zinc air 3,808  52  69%  60%  46,846  808  107%  103% 
Others 53  204%  19%  270  548  155%  179% 
Total of secondary batteries 8,179  13,455  109%  116%  75,038  125,202  109%  122% 
Lead-acid 619  2,939  99%  98%  5,766  26,968  95%  102% 
Nickel cadmium 18  74  43%  37%  487  1,275  76%  87% 
Nickel iron 8%  16% 
Nickel metal-hydride 1,817  333  103%  74%  16,963  3,505  99%  95% 
Lithium ion 5,583  9,264  114%  136%  50,718  83,881  114%  138% 
Others 141  846  84%  74%  1,104  9,572  121%  95% 
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.