Sony NH-AA-B4KN Rechargeable Ni-MH Battery

Photography is my hobby. Now I'm 23, I'm Taking photos from the age of 10. Why I'm saying this is I've bought a lot of rechargeable batteries during this period.

Common issues faced in Rechargeable batteries
1. Capacity --> you should buy above 2000mah - which is available in common nowadays.
2. Another issue is the free drain time.
You may be aware of this. so let me explain it. Recently I have bought some Sony and Hybrio batteries. (sony 2500mah, hybrio 1800mah)

Test 1: (continuously taking photos with flash enabled)

sony - 1055 photos taken
hybrio - 849 photos taken

This explains you the difference between the capacity

Test 2: (Each photo is taken in 5 to 10 min interval for a total period of 15 hours )

sony - 653 photos taken
hybrio - 667 photos taken

Test 3: (Without taking photos, how long can the battery hold power)

sony - just 12 hours
hybrio - 54 hours

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Now Sony NH AA B4KN Review
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Test 1: (continuously taking photos with flash enabled)

exactly 1000 photos taken

Test 2: (Each photo is taken in 5 to 10 min interval for a total period of 15 hours )

993 photos taken

Test 3: (Without taking photos, how long can the battery hold power)

Unlimited time virtually.

Claimed time in pack is 75% charge stays even after 1 year.

Camera used in this review: Canon Powershot A 1100IS

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Facts about Sony NH AA B4KN

1. Ready to use. - Which denotes that it's been charged in factory, so they are confident of its air(free) discharge time.

2. For a long trip, this is the perfect choice, as they will never drain (virtually) without use, which is the feature that other rechargeable batteries lack.

3. Fast recharge time, compared to its capacity

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Above all, I just need to admit a fact that, I'm the editor of a well known computer hardware news website "Lenzfire"

This is just to make this feedback - A Credible Review

I already owned a set of Sony rechargeable batteries and another similar set of batteries from a different company. Sony batteries outlasted the other brand's batteries.
I needed another set of batteries for my camera and so I went for this one.

Unlike my old set of batteries, these batteries do stay charged even when unused for long periods of time ... didn't really test for the 1 year claim .. but I have used them over intervals of 2-3 months with satisfactory performance.

So far did not face any issues.

Very good product. Last wk i received the product. One set of two barrery i have loaded to my digi cam and still taking photographs with it, and count is 300+. In other i need to recharge daily but with sony nh-aa-b4kn over one wk without recharging. great....Thank you flipkart. Even the review i read about the product and fond it helpful for my decision for purchase.

I have ordered this product a week before and i was not disappointed as i received it in couple of days, quality packing as usual.
Before buying this i was using camelion battery 2100 mA. Performance of this is superior to my previous batteries.
this is my fourth or fifth purchase from flipkart and i am fully satisfied with its price and quality service.

Purchased this for use in toys for my daughter. Very good performance. Mostly used in a remote controlled car and once charged can be used for many days. Since batteries are pre-charged, it can be used right out of the box.

Flipkart did a good job of packaging and delivery.