Posts Tagged ‘aftermarket’

Deception in Advertising? – Aftermarket Battery Ratings

Monday, May 17th, 2010

In our last blog post, we made reference to ‘recent reports’ regarding aftermarket batteries.  Our recommendation to purchase only OEM batteries due to build quality, overall useful life and potential safety risks associated with aftermarket batteries is supported in independent testing.

Batteries are rated in terms of there capacity.  Capacity is directly related to the amount and quality of the electrode and electrolyte material used in construction.  The typical measure of capacity for cell phone batteries is in milliamp hours (mAh).  The greater a battery’s rated capacity, the greater usable power available or the longer it can be utilized depending on the draw required by the device.  A 1200 mAh battery can provide either 120 milliamps for 10 hours or 100 milliamps for 12 hours.

The typical criteria used by many in select what battery to purchase generally comes down to price and the mAh rating.  It is no coincidence that the majority of aftermarket batteries advertise a higher capacity rating AND sell for a lower price than most OEM batteries.  Unfortunately, reports now show the batteries do NOT live up to their rating (not surprisingly as they need to use lower quality materials and less of them to maintain a lower price point).

from Mobilecrunch.com:

Are third-party cell phone battery manufacturers deceiving their customers?

1400mAh. 2500mAh! 10 million mAh! Ah-ah-ah!

The vast majority of consumers don’t have a clue as to what those little numbers on their cell phones battery mean. Like with processor clock speeds and television refresh rates, we all tend to just assume that bigger numbers = better product. So when Joe Consumer sees some third-party manufacturer touting their batteries with ratings double that of what the official battery offers, it seems like a killer deal.

Alas, it appears that some of these third-party manufacturers might be pulling the oldest marketing trick in the world: flat-out lying.

Armed with a nothing but a fancy battery testing suite and a desire for honesty, a gent named Doug Simmons set out to put third-party battery ratings to the test. He asked his online cohorts to loan him their third-party wares, and the brawl began.

His findings? While OEM batteries are clocking in at right around the promised rating, third-party batteries.. aren’t.

Now, no one really expects the “official” batteries sold on eBay to be.. you know, official. And they most certainly aren’t. Pitched as being one-to-one matches with the real deal, some of these bootlegs are failing to perform even half as well as the original.

… But it goes beyond eBay: even amongst the (fairly pricey) batteries of some of the more well-known third parties (like Seido, or Mugen), (Doug Simmons)  is seeing discrepancies left and right. Take Seido’s 1600mAh replacement for the Nexus One, for example. The battery is pitched as being about 14% stronger than the Nexus One’s original 1400mAh battery (which, by the way, tested at a very acceptable 1357mAh) — but in Doug’s tests, this “bigger” battery is actually clocking in at a lower capacity (1317mAh) than the original.

Doug’s only tested around a dozen batteries so far, but the results are eye opening; while the OEM batteries are almost always reasonably accurate to their promised rating, the third-party batteries are consistently 20-30% weaker than advertised. Check out his results so far here — and if you’ve got a new-condition battery for him to take a crack at, be sure to get in touch.

The bottom line: When a replacement is needed make sure you purchase a new battery from the same manufacturer as your phone and do so from a reputable supplier.

A special thanks to Doug Simmons for his efforts.

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Before You Buy That Aftermarket Battery…

Friday, April 30th, 2010

We have long advocated against the use of aftermarket chargers and batteries.  Within this blog we have primarily focused on chargers, as there has been far less written about their use elsewhere.  But given the number of issues our customers have experienced with low quality batteries this week alone (and given recent reports on aftermarket batteries), this seems like a good time to post on the subject.

For purpose of this discussion, it is important to note what may be obvious: There is a difference between batteries! Today, most cell phones use Lithium Ion batteries.  While they are lighter, do not display the ‘memory’ issue of Nickel Cadmium and Nickel Metal Hydride batteries, and they have a slow discharge rate when not in use, the Lithium Ion batteries are not as durable and they are more susceptible to internal failure than either of the Nickel-type batteries mentioned.  In addition to the material used, the manufacturing process and any potential lack of properly working internal safety circuits will affect the overall life, capacity and safety of the battery.  Details among these characteristics contribute to differences among battery types and between high quality OEM batteries and those from most aftermarket manufacturers.

Materials:

Most aftermarket manufacturers, in an effort to keep retail pricing low, will generally use lower quality materials or materials that do not conduct current as well.  They tend to have a lower ability to store and dissipate a charge, resulting in a shorter usable life and a greater failure rate.

Build process:

The basic components of a Lithium Ion battery are fairly straightforward – an anode, a cathode and an electrolyte (essentially, ‘positive’ and ‘negative’ sources in an electrically conductive solution).  The overall construction of a Lithium Ion battery consists of a pressurized container that holds metal coils and the electrolyte (highly flammable in this case).  The cells also contain separators designed to keep the anode and cathode from touching.   The production process invariably results in metal fragments being released into the electrolyte.  While elimination of these fragments is not completely possible in the best production situations, poor production processes will result in larger and more fragments.  As a battery heats up during charging and use, these unwanted fragments will move within the electrolyte; should they come into contact with and damage the separators, a short circuit is possible.  Then only bad things are likely to follow!

Short circuits in batteries have been known to cause explosions as a result of increases in pressure due to overheating; battery fires have occurred when short circuit ‘sparking’ has ignited the flammable electrolyte; and if they haven’t exploded or burned, batteries have melted from high temperatures caused by short circuits.

While any Lithium Ion battery is susceptible to these dangers, the more expensive, higher quality OEM batteries are generally manufactured to a higher standard and with better quality control, greatly reducing the risk of these occurrences..

Safety protection:

Given the potential hazards associated with Lithium Ion batteries, a number of safety devices designed to prevent damage to the cells during charge / discharge and overheating are built into the circuitry of all Li-Ion batteries. These could include a monitor of cell voltage to prevent over charging or discharging, control switches to cut off the charge or discharge, internal pressure monitors and vents, and thermal fuses/interrupts designed to guard against excess heat.

While these safety features are required the use of lower quality materials in most aftermarket batteries plus the difficultly in determining which aftermarket batteries are manufactured properly and, therefore, are safe, strongly suggests that any cost savings is not worth the risk.  And that risk becomes even greater for the lower-cost end of the aftermarket and especially for any of the counterfeit batteries readily available.

Logically, therefore, it would be best to avoid aftermarket question marks and possible counterfeits when you need to replace your battery, so when a replacement is needed make sure you purchase a new battery from the same manufacturer as your phone and do so from a reputable supplier.

Additional resources:  Battery University

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One More Reason to NOT Use Aftermarket Chargers

Wednesday, April 7th, 2010

In a previous blog (http://cli.gs/jeG64u) we stated the importance of using only OEM chargers due to the potential damage that could be done to your cell phone when using low quality, aftermarket ones.  The biggest issue with these non OEM products is that they generally do not have the correct overload circuit protection or provide the correct charging output.  This ultimately leads to damage to the charger and, in many cases, the cell phone.  While we did not address the issue with respect to car chargers, the same rule applies – ONLY use OEM chargers.

The reason for re-hashing the topic is due, in part, to the number of cell phones we are seeing as of late that exhibit catastrophic failure after use of these chargers and based, as well, on a story told to me by a service tech at a local automotive repair shop who indicated that low quality, cheap chargers could seemingly also lead to major vehicle damage!

A client came in to the shop with a new, late model Cadillac that was continuously blowing the fuse for the 12 volt power source (cigarette lighter).  Unable to isolate any electrical problem after extensive testing (the same result reached by the dealership) the tech continued troubleshooting by trying to indentify when the fuse would blow.  He finally figured out that the failure occurred every time the vehicle owner used his car charger or the charger for his GPS device.

Both chargers were aftermarket (bought at a mega discount store and branded with the store’s logo).  Within a short period of use, the fuse would blow.  A quick test using an OEM charger confirmed that the vehicle’s electrical system worked as intended.  There was no failure.  The aftermarket chargers were not rated correctly for the devices they were intended to charge.  As a result, the devices continued to attempt to draw current from the chargers ultimately exceeding the safety circuit in the vehicle.  Fortunately, the Cadillac’s safety protection worked as designed.  Had the electrical circuit within the vehicle failed, these aftermarket chargers might have caused significant damage to the electrical system.

As an added note, these particular chargers had their own internal fuses.  These were designed to trip BEFORE the vehicle’s own safety protection did.  They did not, highlighting a major safety concern.

If you need to replace or purchase a charger for your cell phone, make sure it is OEM.

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