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Panasonic 12V 7.2Ah Sealed Lead Acid Battery
How could this be done safely?
I'd like to charge this battery while it's enclosed. I'm building a portable speaker for my Ipad. What do i need so that the amp(Kemo 18w) charges when pluged in but also powers the amp while pluged in charging. Should I use the power supply for the amp to also charge the battery or vise versa? Aslo.... About who long will this run the kemo 18w at normal ( sittng around the patio or kitchen) never more than 20ft away? Thanks guys. Btw the speaker is a small 4ohm sony mini tower from the "Dream System" ha ha ha. It has 4 - 2 1/2 '' woofers and a 1/2 " tweeter. Very easy to power.
(1) You can use a battery charger that will charge the battery quickly and then provide a continuous float charge. I use Power Sonic, the one matched for your battery that plugs into the wall is the PSC-12800A. Or you can get a bigger desktop one with more power. (2) You can use a regular 13.5V power supply. The Pyramid PS4KX (13.8V) from Parts Express would work well. Just turn it off after the battery is charged. Use the same source to charge the battery and power the amp. At low volume, the battery could run for up to 9 hours. But it is likely to be less, and you should only drain the battery half way on these types of batteries to extend battery life.
Date published: 2013-04-30
I want to use this in a boom box progect, could I charge it with the 2A power supply that comes with the lepai TA2020 amp?
Sure, why not. Will charge this battery in about 2 to 3 hours...pretty quickly. Just be sure of polarity and keep an eye on it...check with meter the first couple of charges to be sure you dont overcharge or over heat the charger.
Date published: 2012-08-15
How do i connect two of these to use with Dta-100
I am working on a project but i am a little lost as to what i would need to connect two of these batteries to use with a dayton dta100a amp.
Connect the positive of one battery to the negitive on the other (series wiring). Then use the remaining positive and negitive terminals as your 24V DC.Use a 2.1mm x 5.5mm jack like the ones below to hook it up to the amp. If you can use one without leads and solder/screw some 18 awg wire to it, that will be better able to handle the current then the 24 awg on the one that includes a cord.
Date published: 2012-04-11