- Brand Name: La Crosse Technology
- Model Number: BC-900/BC-9009
- Item Package Quantity: 1
La Crosse Technology BC-9009 AlphaPower Battery Charger (Discontinued by Manufacturer)
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- Battery charger for NiCd and NiMH AA and AAA rechargeable batteries
- New overheat detection protects against overcharging; Individual LCD displays for each charging compartment
- 4 operating modes--Charge, Discharge, Refresh, and Test
- Includes 4 AA and 4 AAA rechargeable batteries, 4 C- and 4 D-size battery adapters, and a travel bag
- Measures 5 by 3 by 1-1/2 inches; 1-year limited warranty
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Top Customer Reviews
5 words: CHARGE, DISCHARGE, TEST, REFRESH and LCD!
Choose the individual charging rate for each battery, (200/500/700/1000/1500*/1800*mA).
Why choose the charging rate?
If you're rushing, charge fast and hot. If you're charging overnight or over dinner, charge more slowly. Slow charging is almost always gentler on the batteries, giving you a longer useful life.
Why set the charging rate individually?
You want this ability in case you have batteries of different capacities, partially discharged batteries, mixed brand/quality or any number of other reasons.
1500/1800mAh only available in Charge mode and only when charging 1 or 2 batteries in terminals 1 and/or 4.
This mode discharges the battery down to 1 volt then recharges to full capacity using Delta V measurement, at a user-selectable charging level*, of course.
Why discharge then charge?
This is the older technique developed to avoid capacity-robbing memory effect encountered when recharging NiCad-based batteries (which by the way are compatible with this charger, unlike the Maha mentioned below).
Why Delta V?
This is the modern measurement adopted by most "fast/rapid" chargers. While not quite as accurate as simultaneously using Temperature measurement and/or detecting Zero Delta V, as the Maha/PowerEx C-204W can do, it should be enough to prevent battery damage and insure complete, consistent charging.
Discharge rates are 1/2 the selected charging rate (max 1000mAh charging in this and other modes). Some batteries can take discharge rates this high, others can't.Read more ›
My old BC-900 has served me well for the past 4 years. But recenetly there is an inrush of reports on 'meltdown' of the new BC-9009. I can only assume that La Crosse is having very poor quality control with the new model. My advice is to stay away from BC-9009 for now, until the situation has been rectified.
[Update on Apr 15, 2010]
The BC-9009 is available through Amazon again. But of course it will take a few more weeks before we can be sure if the overheating problem has been fixed. If any brave soul decide to order one to try out, I encourage you to exercise the charger fully (Refresh at the 1A current setting) for a few days, and watch for any signs of overheating (such as hot-spot on the base of the charger). Make sure to let us know the outcome.
[Update on Jan 22, 2011]
If you have purchased the BC-9009 recently, make sure it has the latest firmware version '37' (this number appears briefly in the rightmost column when you first plug in the AC adapter). Several users have reported that they have no overheating problems with this new version, even though the AC adapter has the same 'IV' marking.
[Original review follows]
I have a La Crosse Technology BC-900 AlphaPower Battery Charger since nearly two years ago, and I'm very happy with it. When the Maha Powerex MH-C9000 WizardOne Charger-Analyzer was announced, its looked even better on paper than the BC-900. So I also bought the C9000 one month ago.Read more ›
Charging Ni-MH batteries is the result of a compromise. A low current is gentle on the battery and maximizes its lifespan, but a full charge takes hours.
A high current will recharge the battery much faster, but put more strain on it, causing it to wear out prematurely. It also requires careful monitoring of the battery's electrical characteristics to prevent damage.
Most of the chargers you can find on the market today use one or the other of these methods. The fast chargers, especially the cheap ones, excel at one thing: destroying perfectly good batteries, because they lack the monitoring circuitry to control the charge current and detect when the battery is full. The slow chargers are usually better, mainly because it's harder to design a really bad slow charger. Unfortunately... they're slow.
The BC-900 is a completely different breed: it lets you pick the charge current for each individual battery, has very sophisticated monitoring circuitry that controls the charging process, and is also capable of "renewing" batteries by running full controlled discharge-recharge cycles.
I was a little skeptical that a fairly inexpensive product would be so thorough, but after reading all the 5-star reviews on Amazon I decided to give it a try. I'm glad I did: it's all it's cracked up to be, and more.Read more ›
Most Recent Customer Reviews
The La Crosse BC-9009 is one of the best battery chargers you can buy. Very reliable circuitry with all the charging features you could need. Read morePublished 2 days ago by Jmc
Does what I need it to. But interface and buttons are a bit confusing. I never really know which buttons I'm supposed to press and for what. Read morePublished 3 months ago by P. M.
been using this charger for quite sometime works well with a variety of different manufacturers batteriesPublished 3 months ago by David Kjellquist
Has worked very well for many years on all sorts of rechargeable batteries. Only ever didn't work with one set of cheap batteries that came with another product, but that isn't a... Read morePublished 4 months ago by PeeGee
Excellent product. I may use other battery chargers but I always use this to resolve problems with the Lithium batteries.Published 4 months ago by SL
Great charger. It has even brought back what appeared to be dead rechargeable batteries for a few more charges.Published 4 months ago by Michael