Maxell ถ่านกระดุม รุ่น LR44 A76 1.5V (1 แพ็ค 10 ก้อน)
ท่านกำลังดูข้อมูลของ Maxell ถ่านกระดุม รุ่น LR44 A76 1.5V (1 แพ็ค 10 ก้อน) หมวดหมู่ แบตเตอรี่ี่แล็ปท็อป รีวิว4.5ดาวใน ขายดีที่สุดใน
รายละเอียดสินค้า Maxell ถ่านกระดุม รุ่น LR44 A76 1.5V (1 แพ็ค 10 ก้อน)
LR44 is an alkaline 1.5 V battery. The most common equivalent batteries are:
Silver Oxide Equivalent Batteries
LR44 can be also be replaced with a silver oxide battery. The most common silver oxide equivalents are:
Many generic packages will list both AG13 and 357 on the label, which are different battery chemistries. Generally, if it lists any alkaline name, then the batteries are alkaline and not silver oxide.
Comparing Equivalent Batteries in Detail
So now you know the equivalent names. Even though the size is the same, they may not be exactly alike. Prices can range among equivalent batteries and knowing how to compare specifications will make you better informed for choosing one.
These days, brand name batteries are mainly selling silver oxide equivalents. So if you are buying from a big box retailer, you will only probably find 357 or 303 Energizer or Duracell batteries. But with the price of silver going up, they are getting more expensive all the time. Alkaline LR44 batteries are cheaper, but which one should you use?
Voltage decreases with battery life
Silver Oxide Equivalent
Maintains voltage with use
As you can see, the main differences are the price, life, and voltage. So if you are just using the battery for some toys, blinking lights, or a calculator, an alkaline might suit you better. Some electronics which require a certain voltage to operate such as a digital caliper, will fare better with a silver oxide battery.
Compare the following voltage discharge graphs. You can see silver oxide equivalent batteries maintain a higher voltage longer. This is why devices that require a certain voltage to operate will seem to eat up alkaline batteries because at 50% capacity, the alkaline battery will not have enough voltage to operate the device.
Chart 1. Alkaline discharge curve.
Chart 2. Silver oxide discharge curve.
Comparing Equivalent Capacities
If you use a lot of LR44 batteries, then the following info can be useful. When shopping for an LR44 equivalent, you can compare battery capacity by looking at the milliampere (mAh) number. Often they will claim 150 to 165 mAh capacity, but is that really true? To find out, you need to take a closer look at their data sheet to compare apples to apples.
Chinese Brand 1. Lists capacity at 158 mAh.
Chinese Brand 2. Lists capacity at 165 mAh.
Energizer Brand. Lists capacity at 150 mAh.
Maxell Brand. Lists capacity at 165 mAh
At a glance of the numbers, it seems the cheaper Chinese brand batteries have more capacity than brand name Energizer batteries. But to compare equally, you must use the same cut off voltage. Using a cut off voltage of 1.3V, we see Chinese brand 1 reaches it in 500 hours at 6800 ohms. So to calculate capacity:
Chinese Brand 1: 1.5/6.8 x 500 = 110 mAh.
Chinese Brand 2: 1.5/5.0 x 360 = 108 mAh
Energizer: 1.5/6.5 x 630 = 150 mAh
Maxell: 1.5/4.7 x 500 = 160 mAh
Used in Watches, Calculator, Electronics and more
High Quality Battery
10 On A Pack