Lenmar MSCAA MACH 1 Speedcharger for AA and AAA Nickel Metal-Hydride Batteries
by LENMAR
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Category: Digital Camera
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Digital Photo Product Details
Manufacturer: LENMARModel: MSCAA
Product features:
- Mach 1 Gamma 1 Hour Speed Charger Ni-MH AC/DC Kit with Neotherm Technology
- Neotherm Technology keeps Batteries Cool, Extends Battery Life and Internal Cooling Fan
- Charges One to Four AA and AAA Nickel Metal-Hydride Batteries
- Four LED Charge Status Indicator
- Includes four 2500mAh AA Nickel Metal-Hydride Batteries, Worldwide 100-240V AC Adapter and DC Car Cord
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Digital Cameras Photo Reviews of Lenmar MSCAA MACH 1 Speedcharger for AA and AAA Nickel Metal-Hydride Batteries
Customer Review: Good unit, with a few minor gaffes
Summary: 4 Stars
This was a holiday present for my son (with Dad expecting to use it too!), whose handheld games eat batteries at a prodigious rate. It has already been a hit today (Dec. 25) in that regard. (I bought a dozen Maya Powerex 2300 AA cells in addition to those supplied by Lenmar. The Powerexes are very highly rated in user reports, but also are a bit pricier than average.)
As previously noted by others, unit ships with batteries insulated from charger terminals by a thin strip of clear (all but invisible, in fact) plastic. This should really have a "pull tail" on it, or a note stuck to the unit saying "Please remove insulator before use" or some such, I bet they get tons of DOA reports from people who just plug in the unit with the supplied cells still in place and expect it to start right up.
The description of this unit on Amazon page says it comes with four 2000 mAh cells, though at the time I placed the order, 2300s/2400s were quite common. I figured, no big deal in that regard. I was pleasantly surprised when the unit arrived with four 2300 mAh cells! Of course, to compensate for this, one of the four supplied cells turned out to be a dud and would not charge.
Unit seems to work as advertised. "One-hour" theoretical charge time is for 1800 mAh cells. The unit charged two of the supplied 2300s in 75 minutes, the third cell took 90 minutes. (You can charge individual cells in any combination in any of the four slots.) Individual red LED indicators initally come on after cell insertion, during rapid charging, then go out again when cells are nearly full and are being trickle-charged. If serious problem with a battery, its LED will flash, or in the case of an excessively-drained, dead cell, LED will NOT COME ON AT ALL upon battery insertion. Note that this (LED dark) looks very much like the NORMAL indication for a battery that has finished charging, so you have to make sure that the lights initally come on for each cell as you insert it. It is too bad dead cells don't ALSO cause a flashing error warning.
While any cell is rapid-charging, the unit's internal fan runs. This normally is an audible, but not excessive, whooshing air noise. (Manual states not to run unit if fan is not operational. Hopefully the unit also has its own thermal auto-shutdown protection for this possibility as a failsafe!) In the case of my unit, the fan blades were striking the inside of the case, so the fan noise was like a cross between a cicada and a really noisy electric razor. Probably cause for a warranty return, but I would prefer not going through that hassle if it can be avoided. By gently flexing the plastic case and loosening the case screws a bit to give the top a smidgeon more clearance, I managed to eliminate the noise.
Contrary to other reports, I observed that batteries became noticeably warm during rapid-charging phase, but not overly so.
Pros
--
* Can use charging slots individually, in any combination
* Very good "intelligent" charging performance
* Comes with both AC and 12V car adaptors
* Supplied with decent-capacity AA cells
Cons
--
* (Minor) Should warn user that batteries ship insulated
* Should be a more specific LED warning for severely-drained ("dead") cells
* Can't leave cells to trickle-charge indefinitely (manual recommends removing cells after 4 hours max) so unit needs to be somewhat attended when in use
* Minor flaws with my particular unit (one dead supplied cell, fan buzzing against case) probably not common, but it could indicate that quality control tolerances are a bit tight.
Note that most of the "cons" simply require using the unit correctly, so as long as you are a careful user, this unit should do very well for most uses. --JMF
Description of Lenmar MSCAA MACH 1 Speedcharger for AA and AAA Nickel Metal-Hydride Batteries
Lenmar Mach 1 Gamma 1 Hour Speed Charger MSCAA Camera Battery ChargersBatteries
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