2V

Four of these batteries in series can deliver as high as 4*1. 8V = 7. 2V, whereas regular alkaline battery might go as high as only 4*1. 5V = 6. 0V.

Coyote Blog » Blog Archive » Some Decent Rechargeable Batteries? 2009

BIG problem with rechargeables ... even when fully charged they're not 1. 5V but instead 1. 2V.

Top 10 Battery Hacks, Tips, And Tricks | Lifehacker Australia 2009

A standard Ni-MH battery is considered spent at about 0. 9V after spending most of its discharge voltage at about 1. 2V.

Coyote Blog » Blog Archive » Some Decent Rechargeable Batteries? 2009

• Rechargeable battery pack (7. 2V, 4300mAH) included - Charge the battery on its own or while inserted in the EPIC Pro, convenient for charging while shooting.

digital photography 2010

If you leave your house at 8:00 AM, your battery is going to be sitting at 4.2V for 6 hours in any 24 hour period.

Pull the plug. Your battery will thank you. Venkat's Energy Blog 2010

But getting back to our laptop, the stability window is ~3.2V.

Archive 2010-02-01 Venkat's Energy Blog 2010

Any cells that read less than 1.2V discard for recycling.

From The Tips Box: Batteries, Electronics Storage, Sponges | Lifehacker Australia 2010

You can change this from charging to 100% state where the voltage is 4.2V to 90% so that your voltage is less.

Archive 2010-02-01 Venkat's Energy Blog 2010

Cells that read between 1.2V and 1.4V stick to a card, using a small piece of double-sided tape, label the card “PART CHARGE.”

From The Tips Box: Batteries, Electronics Storage, Sponges | Lifehacker Australia 2010

So long story short, stuff e.g., passive layers and poor kinetics of reactions happens and things are not as bad as they seem and you can increase the voltage up to 4.2V without bad things really happening.

Archive 2010-02-01 Venkat's Energy Blog 2010