レビュー

iPhone 7の急速充電がどれくらい速いのか試してみた

こんにちは、カメラマンの早川です。iPhone 7が急速充電に対応しているのってご存知ですか?充電の速度は「充電器のA(アンペア)出力」と「充電する機器(スマホやタブレット)の対応A(アンペア)」によって異なります。

同じ急速充電器でもiPhone 6sよりも充電時間が短くなるというので、実際に試してみました。さらに、iPhone 7を購入するともれなく付いてくる標準の充電器と急速充電対応の充電器で、どれくらい充電時間が変わるのかも試してみました。

機器ごとに最適な電力で給電する急速充電器

使用する急速充電器は、充電器につないだ機器を自動で判別して、機器ごとに最適な電力で充電を行う「オートパワーセレクト」対応充電器です。

準備したもの

用意したのはiPhone 7とiPhone 6s、そして「オートパワーセレクト」搭載充電器「BSMPA2404LC1」とiPhone 7の純正充電器。「BSMPA2404LC1」は最大2.4Aの出力に対応しているUSBポートが1つで1.5mのLightningケーブルが付属したモデルです。これを2つ用意し、iPhone7とiPhone 6sを同時に充電します。

iPhone 7はiPhone 6sより23分速く充電が完了

完全にバッテリーを使い切ったiPhone 7とiPhone 6sを同じ急速充電器で同時に充電します。電波の影響などで充電時間に差が出ないようにあらかじめ機内モードにしておきました。

少し充電されて電源がONになった時には既に1%の差が出ていました。

約30分が経過したところで、iPhone 7は45%に対し、iPhone 6sは32%で13%の差。

1時間後にはiPhone 7は82%に対し、iPhone 6sは67%で15%の差。

iPhone 7は0%からの満充電が1時間57分で完了。

一方、iPhone 6sは0%からの満充電に2時間20分かかりました。結果は、同じ充電器で充電してもiPhone 7の方が23分ほど速く満充電できました。

標準の充電器より32分速く満充電できた

次に、iPhone7に付属されていた標準の充電器でiPhone 7を充電してみます。

標準の充電器だと、iPhone 7を0%から満充電するのに、2時間29分かかりました。急速充電器の方が32分ほど速く満充電できたことになります。

充電開始後30分から1時間の間が急速充電の恩恵が大きい

実際に充電しながら比較してみると、バッテリー残量が80%を超えると満充電に向けてのカウントアップが緩やかになるのを顕著に感じました。40%から80%に充電するのが一番効率がいいので、夕方に40%くらいになったら30分充電して夜までバッテリーを持たせるというのが隙間時間の充電にオススメです。


※編集注:ラフなグラフでスミマセン・・・

▼BSMPA2404LC(オートパワーセレクト搭載USB充電器)
Amazon:http://amzn.asia/j9JR9vR
製品情報:http://buffalo.jp/product/power/usb-charger/bsmpa2404lc/

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