![]() It’s a little chunky, but it’s portable and rechargeable. I just wired a barrel jack cable with crimp spade connectors and glued the battery to the bottom of the TV along with a Raspberry Pi that autoplays videos. But because I like inflating the bed in the tent, I just wired this up to use with the 12v battery by exposing the wires and putting crimp spade connectors on it.Īs another example, I had this portable cathode ray TV that took 8 C-cell batteries or a 12v AC adapter. It will usually say right on the adapter.įor example, my family has this air mattress we use for camping and it came with an inflator that works off an AC adapter or car cigarette lighter adapter. If you have a thing that you typically plug in using an AC adapter, that adapter is often doing the work to translate 110v AC into 9 or 12 volts DC. I have used these multiple times to make plug-in 12v appliances portable. Fancier RC battery chargers will typically have a setting for SLA or Pb too. I have this $17 Battery Buddy charger that I can just clip on and plug in and it charges automatically. I’ll often store these with gaffer tape across them as insulation. You do need to exercise some caution not to bridge the terminals accidentally, or they could spark, just like any battery. But they come in a range of shapes and sizes, and a more standard range of voltages. ![]() Compared to the LiPo and Lithium Ion packs in most of our gadgets, these things weigh a ton. The major downside to these is that they’re heavy. They’re sealed up completely, so there’s no major risk of spilling or chemical exposure unless you really work to crack these open. Like your basic car battery, these are an old school rechargeable technology. Instead of having something like this take 100 D-cell batteries that have to be thrown away, the manufacturer mercifully includes a dedicated battery that can be recharged over and over again. ![]() The first time I encountered a sealed lead acid battery was in a Power Wheels kids ride-on car. This one cost me around $20 on Amazon, and you can pick up the same one using the Amazon link in the description, which helps support my videos and the Cool Tools blog. In this Cool Tool’s review I’m going to show you why it’s handy to have a 12v, SLA battery around. ExpertPower 12V 7 Amp EXP1270 Rechargeable Lead Acid Battery
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