Rechargeable batteries Review

We think that Rechargeable batteries are great for electronics. They not only save you money from buying disposable batteries, but they can power a new digital camera for a couple of days before having to recharge them.
 Ok lets share about this :

Rechargeable Batteries

Whether it's for simple devices such as remote controls, or high draining electronics such as digital cameras and MP3 players, rechargeable batteries are a great choice for every day uses, as they can last for years, and they will save you money and time from buying disposable batteries all the time.
There is a wide selection of rechargeable batteries that you can find out on the market today, but there are only three types of rechargeable batteries that are still worth buying, or using. They are Nickel Cadmium (NiCa/NiCd), Nickel Metal Hydride (NiMH), and Lithium Ion (Li-Ion) rechargeable batteries.

First a few terms to learn:

• mAh = is the amount of energy put into a battery. Therefore, 2500mAh will have more energy than 1500mAh.
• Memory Loss = The battery will “forget” the full capacity after a while and will slowly get a smaller “full” charge
• Self-Discharge = The battery will slowly lose energy when not in use.

Things you DO want:

• High mAh (the battery can store more energy)
• Little to none Memory Loss (battery will usually keep its 100% full charge or within 5% of it)
• Low-Self Discharge (the battery can keep its full charge for a couple months when not in use)

Things you DO NOT want:

• Low mAh (the battery can’t store as much energy)
• High Memory Loss (battery will lose its full charge at a fast rate)
• High-Self Discharge (the battery can keep its full charge for about a month when not in use)

Types of Rechargeable Batteries

Below are 3 mainly used rechargeable batteries in the world, Nickel Cadmium, Nickel Metal Hydride, and Lithium Ion, with the pros and cons of each battery.

 

 

 

 

NiCa/NiCd - Nickel Cadmium

Nickel Cadmium rechargeable batteries are slowly becoming replaced by newer effective rechargeable batteries, such as Nickel Metal Hydride and Lithium Ion. Nickel Cadmium is still a good choice if you need to replace disposable batteries in simple devices such as remote controls and alarm clocks.

Pros

• More difficult to damage than other batteries.
• Last longer, as in more charge/discharge cycles.
• A recommended replacement for disposable alkaline batteries.

Cons

• Is becoming out-of-date with the new and rising rechargeable batteries
• They won't last very long for high draining electronics (Cameras, MP3 players, handheld games, etc.)
• They have memory loss.
• Higher cost than alkaline disposable.
• They are very toxic.

NiMH - Nickel Metal Hydride

Nickel Metal Hydride rechargeable batteries are becoming the favorite among rechargeable batteries, as they can contain 2-3 times the capacity of Nickel Cadmium rechargeable batteries, can supply high draining electronics such as digital cameras, and are much more effective than mostly any disposable battery.

Cons

• The normal NiMH batteries have a High-Self-Discharge. They lose about 30% of their charge every month.
• Memory Loss
• They aren't as durable as other batteries

 Pros

• More affordable than NiCa.
• The average NiMH battery has about 2-3 times the capacity of NiCa/NiCd.
• They can last much longer in high draining electronics than NiCa/NiCd or disposable batteries.
• They are more efficient than alkaline batteries.
• The LSD (Low Self Discharge) versions of NiMH have the lowest self discharge of all rechargeable batteries.

Li-Ion - Lithium Ion

Lithium Ion rechargeable batteries are the newest addition to the rechargeable battery market, and they are becoming one of the more popular rechargeable batteries, as they can supply the most amount of power for high draining electronics, and they also have the most energy capacity, making them the longest lasting batteries out today.

Cons

• They lose energy capacity permanently over a long time, and there is not much to avoid that.
• They are the least durable of batteries. So treat them with care.
• The most expensive of rechargeable batteries.

Pros

• They are great for high energy draining electronics. (Cameras, mp3 players, etc.)
• They have no memory loss.
• They have Low-Discharge rate. They slowly lose about 5% of their charge every month.
• They have the most energy capacity of rechargeable batteries.

 So let's make choice and let's save our earth :)

Information source : battery review

Battery Reviews, a must to know about it.

The Batteries, whether disposable or rechargeable, are available in different chemistry compositions. It is important for us to choose the right type of battery for your needs, from household electronics to high-tech devices.

 Battery Reviews :

Powered by Batteries

Batteries power a wide variety of the items we use everyday for work and play. We use them to power our cameras, cell phones, laptops, MP3 players, and more.

Types of Batteries

When shopping for batteries, you will find that you have many options. There are several types of batteries, each with advantages and disadvantages. Learning about the various options can help you decide the best type of battery to buy for your power needs.
Batteries come in two basic types, either disposable or rechargeable. Within each of these basic types, there are a variety of battery options as well.

• Disposable Batteries, also known as single-use or primary batteries, have one power cycle and must be replaced when drained. Options include alkaline, zinc-silver, lithium, carbon-zinc, and zinc air.
• Rechargeable Batteries, also known as secondary batteries, can be recharged and reused. Options include NiCa/NiCd - Nickel Cadmium, NiMH - Nickel Metal Hydride, Li-Ion - Lithium Ion, and SLA - Sealed Lead Acid.

What battery should I get?

We recommend rechargeable batteries. Rechargeable batteries are great for electronics and save you money from buying disposable batteries. They also have a relatively long power life. For example, they can usually power a new digital camera for a couple days before having to recharge them.
If you decide to buy rechargeable batteries, you are going to have to find out what type of rechargeable battery you want. This often depends on what you are going to use it for and how much you want to consider spending.
If you want good reliable batteries that you can use for anything without having to worry as much about getting new rechargeable batteries, than NiMH batteries are what you want. They can supply the need for most electronics, are able to keep their full charge pretty high. And, if you get the Low Self-Discharge NiMH batteries, they will stay at a high charge for a long time even when not in use.
If performance and not money is not the primary issue, than get the Lithium Ion. They are the best on the market right now, but they need to be replaced every few years. They have slow discharge, allowing them to keep a near full charge when not in use. They are also able to last longer in power draining electronics like Cameras with Flash than NiMH or NiCa.

What battery charger should I get?

If you buy rechargeable batteries, you will also need a battery charger.
There are a couple things you should look for when choosing a battery charger.

• Make sure it’s a smart charger. This means it won’t overcharge and will stop charging when it’s fully charged.
• Make sure it takes a couple of hours for a full charge. The 15 minute chargers overheat the batteries and slowly lower the full charge capacity of batteries. Basically, the slower it takes to charge the battery the better it is for the battery.
• Make sure it supports the capacity of your battery. For example, some chargers can’t charge 2700mAh.

If you want a really good charger that takes the most care of your batteries full charge, then get one that discharges the battery. This means it takes all the charge out, then it charges the battery. This solves the memory loss problem that can occur in batteries.

Reference from : battery review.