#96 in Baby
Reddit mentions of Portable DC 12V 4500mAh Rechargeable Li-ion Battery for CCTV Camera Wireless Camera / Baby Monitor, Digital Camera, CD/MD
Sentiment score: 5
Reddit mentions: 11
We found 11 Reddit mentions of Portable DC 12V 4500mAh Rechargeable Li-ion Battery for CCTV Camera Wireless Camera / Baby Monitor, Digital Camera, CD/MD. Here are the top ones.
Buying options
View on Amazon.comor
Specs:
OK lets avoid the bluetooth speaker in general.
Micca MB42x +Lepai 2020 +Bluetooth adapter +12V battery(for the beach just put everything in a bag)
80+20+20+20 = $140
diodescaps on them because the PWM will melt them.one of [these,](http://www.amazon.com/Portable-4500mAh-Rechargeable-Battery-Wireless/dp/B008UKKXRC/ref=sr_1_3?ie=UTF8&qid=1405463569&sr=8-3&keywords=12v+rechargeable+battery+pack
) and one of these and your good to go. trust me.
http://www.amazon.com/Portable-4500mAh-Rechargeable-Battery-Wireless/dp/B008UKKXRC/ref=sr_1_3?ie=UTF8&qid=1397599005&sr=8-3&keywords=12v+lithium+battery
This will last all day long
http://www.amazon.com/gp/product/B008UKKXRC/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
Non-mobile: this
^That's ^why ^I'm ^here, ^I ^don't ^judge ^you. ^PM ^/u/xl0 ^if ^I'm ^causing ^any ^trouble. ^WUT?
Similar to this. Its not great quality though and I've never had a chance to fully test battery life yet but I think it would last at least 4 hours on full volume continuously.
Yep. That's the stuff. I'd reccomend this battery to accompany it. http://www.amazon.com/Portable-4500mAh-Rechargeable-Battery-Wireless/dp/B008UKKXRC/ref=sr_1_10?ie=UTF8&qid=1375231869&sr=8-10&keywords=12v+rechargeable+battery
Boosting up to a 12 volt from a 3.7v batter strains the battery pretty heavily. power is the same on both sides of the converter minus efficiency losses, so this would require 3 times the current on the low side.
Typically, a battery's mAh rating is tested under specific loading conditions. Puekerts law states that drawing too fast from a battery can change its actual capacity by a greal deal (maybe 40%).
I would use a 12v battery like thishttp://www.amazon.com/Portable-4500mAh-Rechargeable-Battery-Wireless/dp/B008UKKXRC/ref=sr_1_4?ie=UTF8&qid=1418685970&sr=8-4&keywords=12v+lithium+ion+battery+pack#productDetails
then use a buck converter to step down to the led voltage. you can even buy a buck converter IC to make it simple. The IC will regulate the output, although LEDs arent terribly sensitive to voltage fluctuation
[Here is a better option] (http://www.amazon.com/HitLights-Rechargeable-3800mAh-Lithium-Connector/dp/B007RQW5WG/ref=sr_1_1?s=hi&ie=UTF8&qid=1405311237&sr=1-1&keywords=12v+lithium+battery), in my opinion. Or [this] (http://www.amazon.com/Portable-4500mAh-Rechargeable-Battery-Wireless/dp/B008UKKXRC/ref=cm_cr_pr_product_top) I would also take a look at building your own battery pack [similar to this] (http://www.amazon.com/ExpertPower%C2%AE-3500mAh-Extended-Battery-iRobot/dp/B007V6UL1Y/ref=sr_1_95?ie=UTF8&qid=1405311619&sr=8-95&keywords=14.4v+battery). The first two look like they might even plug right into your amp.
Heck even [this] (http://www.amazon.com/12v-Standscan-Battery-Power-Pack/dp/B00BTGTJPG/ref=sr_1_4?s=electronics&ie=UTF8&qid=1405312250&sr=1-4&keywords=12v+portable+battery) would work better and be cheaper/lighter if you put some rechargeables in it.
I would want any battery pack around 12-15V. I would also consider getting a [cheaper amplifier] (http://www.amazon.com/LP-2020A-Lepai-Tripath-Class-T-Amplifier/dp/B0049P6OTI/ref=pd_cp_e_0). It uses the same amp chip (ta2020) as the one you posted
Edit: Essentially, I wouldn't want to carry around 7 pounds of lead acid batteries when I could carry much lighter batteries to do the same job.
oh ok sweet. then I could keep a pack charging and a pack on my backpack. I sometimes spend 6 to 8 hours wearing it so its important to either have a long battery life or quick charging/battery swapping. getting the weight down would be awesome.
Are these the batteries you tested as working fine on the lepai?