31 March, 2009
Sony Super Quick Charger
Time to talk about batteries again. Still, I don't like to use AA/AAA rechargeable batteries. However, I bought a new AA/AAA NiMH charger - Sony Super Quick Charger with LCD Screen (BCG34HRMF4).
You might remember that I mentioned Energizer Rechargeable Dock & Go Charger a while back. The Energizer Rechargeable Dock & Go Charger takes 3 hours to fully charge 4 AA NiMH (upto 2650mAh) batteries.
Sony has a great charger, a charger that allows users to charge batteries individually, it also indicates the amount of power and charging state (in LCD display)
(As usual, more photos follow...)
Most NiMH battery chargers require users to charge batteries by pair (either charge two batteries or 4 batteries at a time). Being able to charge a single battery is a very useful feature.
Another reason I bought this battery charger is that it supports charging of 2700mAh NiMH rechargeable batteries. And I bought some.
One bonus about those batteries is that the included battery carry case. Nice simply design making it easy for carrying.
Why did I buy NiMH rechargeable batteries? The manuals of both my Sony GPS Unit Kit (Sony GPS-CS1KASP) and Sony GN58 Flashes (HVL-F58AM) state that NiMH rechargeable batteries perform better than regular alkaline batteries (longer GPS location recording and more fires of flashes).
Now, here's a problem with NiMH batteries. All NiMH batteries discharge themselves at a rate of about 1.5% per day. That is, a full charged NiMH battery will lose all its power in about 6 months time without being used at all. Solution? Get alkaline batteries or get the relatively new low self-discharge NiMH batteries, or better known as Eneloop batteries. (Sanyo Eneloop is the first low self-discharge NiMH battery in the market, and a very popular/well known brand. Eneloop batteries are highly recommended by many professional photographers.)
After some investigations (among a number of retail stores), I discovered that Sony's CycleEnergy is an equivalent of Sanyo Eneloop, and they are easier and cheaper to get (compared to Sanyo Eneloop). I decided to get some Sony CycleEnergy batteries (to Don: Antony is poor.)
Wikipeida indicates that Sony CycleEnergy batteries are a rebranded Eneloop manufactured by Sanyo.
Why do I need both 2700mAh rated NiMH batteries as well as 2000mAh low self-discharge NiMH batteries? One is suitable to charging the night before, and the other one has very long storage time.
There's one thing I learned: Unless the rechargeable is low self-discharge NiMH ones, there's no need to charge them once they are empty, unless you want to use them straight away.
The Sony Super Quick Charger also comes with Refresh Function. The Refresh Function is a function that will eliminate the “memory effect” left over by a battery that has been charged without first being fully discharged.
One important thing to remember. Rechargeable batteries are not suitable on all devices. Reason is that standard AA or AAA batteries provide voltage of 1.5 V (volts), while NiMH provides only 1.2 V. Also, although the name "rechargeable" sounds great, but a NiMH battery can only last about 100s of charges over its lifetime. (Low self-discharge NiMH batteries are said to last more than 1000s of charges over their lifetimes.) NiMH batteries lose their charge at about 1.5% per day. In plain words, rechargeable batteries won't perform well after some time and some uses.
Why did I buy Energizer Rechargeable Dock & Go Charger since I already have an Energizer Ultra Compact Charger? Charging time is obviously the number one decision reason. Spending 8.5 hours on charging batteries while on holiday is obviously a super stupid idea. Timing 8.5 hours is obviously a big hassle.
(to Don: Antony is poor.)
And the important news on the rechargeable battery breakthrough:
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Posted by Antony on 31 March 2009 9:52 PM | gadget
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