The method of selection and change the batteries UPS (uninterruptible power supply)

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The article is based on 6 years of experience in the battery replacement blocks UPS (uninterruptible power supply, UPS) for personal computers (home use)
The most common cause of failure sources (units) uninterruptible power supply (UPS), (in English. Uninterruptible power supply or UPS) – the failure of the battery (loss of capacity).

In uninterruptible power supply (UPS), are usually used sealed lead-acid batteries with gel electrolyte based on sulfuric acid. They are one of the cheapest types of batteries at the same time quite effective – low internal resistance, higher than that of nickel – cadmium (NiCd) and nickel – metal – hydride (NiMH) cell voltage, relatively low self-discharge. The general lack of lead-acid batteries – they are afraid of deep discharge. The more he is exhausted and the longer he is in this state, the more it will lose capacity.

The fact is – if the new lead battery 12V nominal discharge below 8 volts, and in this state hold 3 days – it can be safely utilize your – by any means he will not restore!

Another disadvantage of lead-acid batteries for uninterruptible power supply units – limited lifetime, in most cases, not exceeding 5 years. The higher the temperature of the battery pack and the more frequent, prolonged and deeper level, the shorter the life of lead acid batteries.

In this regard, some of the vendors that sell UPS, considered a consumable item and batteries in the event of their failure, the warranty does not change. This is not true for most manufacturers, service centers which have to replace the battery if it is out of order during the warranty period. This significantly reduces the producers’ profits up unit and they are trying to compensate for premium replacement battery after the warranty period. This helps them to good old-fashioned story about that in a given unit can be installed only the original battery manufacturer, and in any case not the other. Learn more about rbc2 battery.

For luck in the vast majority it is nonsense!

The fact is – no manufacturer of uninterruptible power supply does not manufacture batteries and buys them from other producers, printing and glue them on their labels and tags, and sometimes not even doing that.

Another confirmation that – several times at the request of customers to conclusions from the case for an external battery pack, which clung to the battery until the car. All successfully worked!

So, the three criteria by which selected batteries for uninterruptible power supply (UPS):

Size and voltage. Large size battery is not inserted in its slot, and with less not get the desired battery life, or UPS shutdown after power failures.

Brand (company – producer). Of the best, which has never been discrepancies, recommend CSB, Delta, Exide (Tudor), Fiamm, good Yuasa, just a series of Bossman Bossman Professional. I do not recommend Sven, Panasonic (may I come across a fake).

Purpose battery. Suitable battery or specifically designed for uninterruptible power supply units (CSB and Delta series HR), or general purpose battery (CSB Series GP).

Attention! – Has produced a series of lead-acid batteries of the same standard size with a long (20 – hour) discharge duty. They are not suitable for use in uninterruptible power supply (UPS), because not designed to create a large discharge current. If used in the UPS, they are easily damaged, sometimes damaging everything around it. These batteries are primarily intended for use in security systems and in accordance with operating conditions have a service life of 20 years. An attempt to use the UPS can lead to heating and battery razruzheniyu its bloating, cracking the case and vytokom acid (at a temperature of 55-70 ° C can be released from the gel acid electrolyte).

When buying a battery, pay attention to the date of manufacture – no more than 6 months before the date of purchase, and at least a voltage of rest – at least 12.5 V. If the UPS is more batteries, the replacement shall be subject to all, and the purchase must also be pay attention to the identity of purchased batteries: one and the same type, production date, lot number, etc.