Question 1

Are these batteries  5400mah or 600mah? the description seems deceptive concerning the capacity...

Accepted Answer

First, as others have already clarified - they are 600 mAh.

Second, the "5400 mWh" is not only intentionally deceptive, it is also inaccurate since they are NOT 9V, they are only 8.4V which yields just 5040mWh (V*A=W), not the advertised 5400mWh (which is nearly 7% above the actual yield).

Looking at their other batteries (AA, AAA, ...) (of which I have dozens) you can see they are all listed in mAh, so they are fully aware of what they are doing here with the 9V, I just don't understand why.  Generally speaking, EBL makes some pretty good batteries, so it is a mystery why they chose to mislead the consumers in this case.

Question 2

what is the different in prefromace  600mAh and a 5400 mWh?

Accepted Answer

They’re exactly the same thing.  Watts = Volts x Amps.  Because these are 9V batteries, 600mAh x 9V = 5400mWh.

Question 3

Thank you! I need 9v rechargeable batteries that actually meter in at 9v not 8.4.  Do you sell any batteries like this?

Accepted Answer

In the past I have found LiFePO4 rechargeables that do deliver 9V, actually 10+ volts fully charged because that chemistry is nominally 3.2V per cell. I can no longer find them sold anywhere, sad to say; probably because the mAh rating wasn't as good as the more common Li-ion.  But it was a product at one time, and you can still buy 9V battery chargers with a LiFePO4 setting.

Question 4

Can the battery be charging while in use?  I want it to power a project, but have a solar panel charge it at the same time.

Accepted Answer

That’ll work, but this tends to be a bit hard on the batteries, so they likely won’t live as long.  Usually when someone’s trying to supply constant power to a device that uses batteries, I point them toward a battery eliminator.  See if you can find a good 9V battery eliminator that suits your needs.  If not, this’ll work too.

ASIN	B086GTFGPP
Amazon 売れ筋ランキング	家電＆カメラ - 118,089位 ( 家電＆カメラの売れ筋ランキングを見る ) 充電式電池 - 673位
おすすめ度	3.8 5つ星のうち3.8 (236) var
バッテリーセルタイプ	リン酸リチウム
ブランド名	EBL
メーカー名	EBL
保証内容	1年間制限ある保証
再使用可能性	充電式
商品の推奨用途	時計
商品の重量	0.29 ポンド
商品本体サイズ	48 x 260 x 17 mm
型番	9V600，9VCV-USB
外部機関認定情報	Não Aplicável
電圧	8.9 ボルト
電池の数	4 9V形電池(付属)
電池の重量（グラム）	2.5 グラム

EBL 9V電池充電式 (9V電池充電式)

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