- Brand Name: MaximalPower
- Model Number: Combo 9V
- Battery Description: Lithium-Ion (Li-Ion)
- Item Package Quantity: 1
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Maximal Power Combo 9V MaximalPower 9V Battery and Charger Pack of 2 9V li-ion Rechargebale Batteries
|Price:||$30.02 & FREE Shipping. Details|
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- Value combo set with two 9V li-ion rechargebale batteries, and one 9V dual channel battery charger.
- 9 Volt Battery Chemistry: Li-ion, Capacity: 550mAh
- 9V battery is reusable and renewable to reduce waste and save the planet
- ultra high power, superior performance and no memory effect
- 1 year limited warranty
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MaximalPower 9 Volt / 9V battery and charger combo pack is a value combo set of two 9 volt li-ion rechargebale batteries and one 9V dual channel battery charger with LED light indicator. 9 Volt Li-ion Rechargeable Battery - MaximalPower 9 Volt rechargeable battery is li-ion replacement battery for all standard 9V battery and can be charged by 9V li-ion charger. It is reliable, reusable and renewable to reduce waste and save the planet. The battery requires 3 to 5 charges and discharges before achieving its maximum capacity. The battery life depends on the type of device or the accessory used and the temperature of the environment stored. 9V li-ion battery needs to be charged with 9V li-ion charger only. 9V Li-ion Battery Charger - Charging Current: 100mA per channel. Dual Channel: Two 9V li-ion batteries can be charged at the same time. LED Light Indicator: Charging - LED light turns red, Fully charged - LED light turns green.
Top Customer Reviews
05/04/2013 - Update:
After twice weekly use, the batteries DO NOT last more than 20-30 mins now (always returned to charger after each use). I know that Lithium-ion batteries should last 1000+ recharges with 80% depth of discharge, and GOOD Ni-Cd batteries recharge 100s of times, so there is something suspect with these. ..
08/21/2013 - Update:
These batteries have a larger mAh capacity because they are "lower" voltage. If you don't need 9volts, like the included LED flashlight which ran for 53 hours(!) with usable light, these will work very well. If you need them for a "higher" voltage application these will have limited use. For me, these were used in a wireless microphone system that was near the base for the first month then I started using them farther from the base and they did not perform well. Below are the results of my tests:
9volt date voltage charged
#1 7/10/2013 8.26 3months ago
#2 7/10/2013 8.27 3months ago
#1 7/10/2013 8.31 10min charge to full
#2 7/10/2013 8.31 10min charge to full
#1 7/10/2013 8 after using included LED light for 1 hour
#1 7/12/2013 5.26 after 53 hours of LED
#2 7/12/2013 8.34 after 53 hours of charge
#1 8/21/2013 8.35 after 40days on charger
#2 8/21/2013 8.29 after 40days standby
I purchased two samples of three different brands and ran three runs of each, depleting them to exhaustion each time. As you might expect, the facts were different from the claims about storage capacity.
If you're interested in trying rechargeables, based on my tests, I can recommend the EBL brand slightly over the Maximal. It's rated at 600mah, but tested out at 618mah. Maximal Energy at checked out at 482 vs 550 claimed. The others one I tested, Tenergy tested at 330maH vs 500maH claimed. I also included some Duracell alkalines which were in between the EBL and Maximal, but at several bucks a pop, are an expensive way to go.
The last time I checked, you can now buy a four-pack of EBLs for $30, including charger!
I decided to try LION batteries instead as they work well and last a considerable amount of time in my phone. The first one has only needed to be charged once and the 2nd one is in the unit now on its original charge and going strong. I am getting at least the usage time I was with alkaline batteries, if not slightly more.
I am very happy with this purchase so far.
Beware you will need a Li-Ion charger, because this kind of batteries need pulses of current for charging correctly. I own maximal power 9 volt battery charger which I also recommend and it comes bundled with 2 of these bateries.