Comments on: MH-C1090F 9V battery charger Frequently Asked Questions http://protog.com.au/blog/index.php/mh-c1090f-9v-battery-charger-frequently-asked-questions/ New photography products and user tips Thu, 20 Jan 2011 06:41:22 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Kel http://protog.com.au/blog/index.php/mh-c1090f-9v-battery-charger-frequently-asked-questions/comment-page-1/#comment-5493 Kel Sat, 09 Jun 2007 10:51:37 +0000 http://servaas.com.au/blog/index.php/mh-c1090f-9v-battery-charger-frequently-asked-questions/#comment-5493 <p>Hi Robert</p> <p>I would suggest that the problem lies with your batteries. It sounds like they are not holding their charge. We have customers using Maha 230mAh batteries in Microphones for stage productions. They are switched on at 6pm when they put on their costumes and still have charge at the end of the show at 11pm.</p> <p>I suggest that you check your battery voltage after charging, using a multimeter. If they are 9.6V cells, they should be between 11.2V and 12V. If they are 8.4V cells they should be between 9.8V and 10.5V. Check the voltage again one day and one week after charging. If the voltage is still close to fully charged, the batteries are OK. If they have dropped 20% or 30% in a week, then they are not holding charge. If this is the case, I would recommend you try some Maha Powerex 9V batteries :)</p> Hi Robert

I would suggest that the problem lies with your batteries. It sounds like they are not holding their charge. We have customers using Maha 230mAh batteries in Microphones for stage productions. They are switched on at 6pm when they put on their costumes and still have charge at the end of the show at 11pm.

I suggest that you check your battery voltage after charging, using a multimeter. If they are 9.6V cells, they should be between 11.2V and 12V. If they are 8.4V cells they should be between 9.8V and 10.5V. Check the voltage again one day and one week after charging. If the voltage is still close to fully charged, the batteries are OK. If they have dropped 20% or 30% in a week, then they are not holding charge. If this is the case, I would recommend you try some Maha Powerex 9V batteries :)

]]> By: Robert http://protog.com.au/blog/index.php/mh-c1090f-9v-battery-charger-frequently-asked-questions/comment-page-1/#comment-4525 Robert Mon, 04 Jun 2007 03:34:43 +0000 http://servaas.com.au/blog/index.php/mh-c1090f-9v-battery-charger-frequently-asked-questions/#comment-4525 I purchased the MH-C490F Stealth to recharge 9V 250 mAH NiMH batteries for use in some noise monitoring equipment which only draws a low current. All five batteries went flat within 2 hours, despite the indicator light on the charger going to green. I tried it out again with the same results. When I use alkaline 9V batteries in the same equipment, they last about 50 hours. Is there something wrong with the charger? I purchased the MH-C490F Stealth to recharge 9V 250 mAH NiMH batteries for use in some noise monitoring equipment which only draws a low current. All five batteries went flat within 2 hours, despite the indicator light on the charger going to green. I tried it out again with the same results. When I use alkaline 9V batteries in the same equipment, they last about 50 hours. Is there something wrong with the charger?

]]>