Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Learning
Flashes
Rechargeable batteries?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="WayneF" data-source="post: 150296" data-attributes="member: 12496"><p><strong>Re: Recharagble batteries?</strong></p><p></p><p></p><p></p><p>I have a MH-C9000, and I love it. Certainly it is excellent, and has many features. While certainly better than some, it is not necessarily better or faster than all (but you can change its default charge rate of 1 amp to be from 0.2 amp to 2 amps). Maha says rates too slow make it hard to detect the cutoff point properly, and too fast gets too hot. If you just insert the batteries and walk away, it does 1 amp, which is ideal for Eneloops. 1 amp means a 2000 mah battery will charge in 2 hours if fully discharged (2 hour rate is called 1/2 C), but they never are fully discharged, and one hour is more common for me.</p><p></p><p>Here is the MH-C9000 manual, you can see what features it has:</p><p><a href="http://www.mahapowerex.eu/user-manuals/mh-c9000-manual-en.pdf" target="_blank">http://www.mahapowerex.eu/user-manuals/mh-c9000-manual-en.pdf</a></p><p></p><p>The LCD reporting is nice. The many features are nice. But here's the big deal. The cheap chargers are too dumb to monitor the batteries properly. Some just charge for a fixed time and then cut off... but this is without regard for the size of the battery, or its initial state of dischange (or its needs). Some just charge until the batteries get too hot, and then cut off. That can work, but the better smart chargers actually monitor the voltage on each battery (but also watch temperature too).</p><p></p><p>Sanyo chargers surely know what they are doing, surely better than some, it would be my choice in a cheap charger). But they are inexpensive chargers. Notice that inexpensive 4-cell chargers have two LED status lights (this Sanyo charger too), but better smart chargers have four LED status lights. The cheap chargers charge two cells in series, and are unable to monitor the two cells individually. If one cell is at a lower charge state, or partially defective (going bad), this disrupts the overall picture, and the good cell suffers from being treated the same. Better smart changers are effectively four chargers in one, with four status LEDs (and four monitoring circuits), and these monitor individual cells, and each cell gets what it needs, no more, no less. My notion is that we need at least that much (four LED status reports, one for each battery).</p><p></p><p>All the Maha chargers are smart, and all are quite good. I also have a Maha C-401FS, no LCD but it has the four LEDs and is a smart charger. It has a switch to select two charge rates, one is the proper 1 amp rate and one is much slower. Its cost is not much different than the C9000 however. They also make excellent eight cell chargers.</p></blockquote><p></p>
[QUOTE="WayneF, post: 150296, member: 12496"] [b]Re: Recharagble batteries?[/b] I have a MH-C9000, and I love it. Certainly it is excellent, and has many features. While certainly better than some, it is not necessarily better or faster than all (but you can change its default charge rate of 1 amp to be from 0.2 amp to 2 amps). Maha says rates too slow make it hard to detect the cutoff point properly, and too fast gets too hot. If you just insert the batteries and walk away, it does 1 amp, which is ideal for Eneloops. 1 amp means a 2000 mah battery will charge in 2 hours if fully discharged (2 hour rate is called 1/2 C), but they never are fully discharged, and one hour is more common for me. Here is the MH-C9000 manual, you can see what features it has: [URL]http://www.mahapowerex.eu/user-manuals/mh-c9000-manual-en.pdf[/URL] The LCD reporting is nice. The many features are nice. But here's the big deal. The cheap chargers are too dumb to monitor the batteries properly. Some just charge for a fixed time and then cut off... but this is without regard for the size of the battery, or its initial state of dischange (or its needs). Some just charge until the batteries get too hot, and then cut off. That can work, but the better smart chargers actually monitor the voltage on each battery (but also watch temperature too). Sanyo chargers surely know what they are doing, surely better than some, it would be my choice in a cheap charger). But they are inexpensive chargers. Notice that inexpensive 4-cell chargers have two LED status lights (this Sanyo charger too), but better smart chargers have four LED status lights. The cheap chargers charge two cells in series, and are unable to monitor the two cells individually. If one cell is at a lower charge state, or partially defective (going bad), this disrupts the overall picture, and the good cell suffers from being treated the same. Better smart changers are effectively four chargers in one, with four status LEDs (and four monitoring circuits), and these monitor individual cells, and each cell gets what it needs, no more, no less. My notion is that we need at least that much (four LED status reports, one for each battery). All the Maha chargers are smart, and all are quite good. I also have a Maha C-401FS, no LCD but it has the four LEDs and is a smart charger. It has a switch to select two charge rates, one is the proper 1 amp rate and one is much slower. Its cost is not much different than the C9000 however. They also make excellent eight cell chargers. [/QUOTE]
Verification
Post reply
Forums
Learning
Flashes
Rechargeable batteries?
Top
