On first page you have: ‘the top in the NiMH battery industry till this day’. Not wrong, but the more usual expression is ‘to this day’.
On the same page ‘In 2009 limited they also produced a Tones edition’. Not even sure what you’re trying to say, but ‘limited’ is out of place, maybe ‘in 2009 they also produced a limited Tones edition’? I also see later on you use ‘tones’ in lowercase, it might be good to settle on one spelling.
Then ‘their first Low capacity version, (for low-drain devices)’. Comma should go after parentheses rather than before.
‘In the same year Sanyo officially became a Panasonic company’. Not wrong but just ‘the same year’ sounds better than ‘in the same year’. Besides, the previous sentence starts the same, so you could maybe say ‘also the same year’. The better tense is ‘has become’.
In fake eneloops: ‘Some are more obvious then others.’ Should be ‘than’, not ‘then’.
The picture in the Special edition batteries is much too small, and when you click it it doesn’t get any larger. What’s the point of clicking it if it shows the same thing?
‘many kinds of wrappers ’. You have extra spaces around ‘wrappers’ and in other places, you probably should remove all of them. It also needs a comma after.
In chargers, ‘Both, Sanyo and Panasonic made some interesting chargers.’ No comma after ‘both’. Tense is also wrong, should rather be ‘are making’ or ‘have been making’.
‘not all of their chargers are good’. Missing period.
‘Some of them charge a pair of batteries for X amount of hours’ This is a continuation of the previous idea, should be the same paragraph.
‘Some products like the mobile boosters were improved and sold under the Panasonic brand.’ Tense is not great, should rather be ‘have been improved and sold’.
For special names sometimes you use bold, sometimes backquotes, sometimes double quotes, it would be good to have a more uniform styling.
Your links are sometimes bold sometimes not, I don’t see a rule.
AA please. Thanks.