In fact, at just five-percent SOC, the battery still provided 12.6 volts. That’s the 20-hour discharge rate for these batteries and we can see the typical nearly flat voltage line until we reach near zero-percent SOC. The graph above shows the results of a 20-hour rundown test performed at five amps. That makes these batteries, including a bonus 10-percent capacity, sound pretty darn good.Ĭonsistent with the behavior we typically see with LiFePO4 batteries, these batteries show a very flat voltage discharge curve. Consider that many lead-acid batteries fail to meet their rated capacity, even when brand new. In fact, as the picture above shows, a 20-hour rundown test performed at 5-amps yielded just shy of 110 amp hours. So, the actual capacity of the unit is 105 amp hours, as I’ve been able to confirm in multiple rundown tests. During my testing, I widely exceeded these values and eventually saw the BMS’ protection kick in, but not until I’d blown past those ratings by large margins.Īlthough my 12-volt battery is advertised with a 100-amp-hour capacity, it contains four 105-amp-hour cells in series. The 12-volt, 100-amp-hour battery I’m testing is rated for 120 amp continuous discharge and 50 amp continuous charging. I am testing the B1200B in the first column Epoch reports they’re working on testing communications but didn’t have any information to provide yet. I tried connecting a test battery to the VE.Can port on a Victron GX system and wasn’t able to establish any communications between the battery’s BMS and the Victron system. The gauge connects via the CANBus port, so if you’re using CANBus communications, you won’t be able to use the gauge. The top of the battery includes a pressure relief valve to normalize pressure inside the sealed battery and a power button that puts the battery into a sleep state and wakes it up.Įpoch also includes a 10-segment LED battery gauge that plugs into the communication port and displays battery SOC (state of charge) in 10-percent increments. Additionally, there is a CANBus external communication port on the side of the battery. IP67 means the batteries can be submerged to 1-meter for 30 minutes. Epoch’s batteries are heated, IP67 certified against dust and liquid ingress, and feature easy mounting feet with screw holes.
100 amp hour lithium battery Bluetooth#
The batteries’ BMS (battery management system) has a Bluetooth radio to easily see the batteries’ status, history, and any warnings or faults. Features The power switch on top of the battery turns off and wakes up the battery’s output The CANBus port is located under the light blue, watertight cover Although there are two RJ45 shaped connectors, only the right, CANBus, connector appears to have contacts Epoch’s mounting feet sure make securing the batteries easy Note the IP67 symbol in among the usual symbols Specs and features for the 100-amp-hour, 12-volt batteryĮpoch’s batteries come with a pretty complete range of features. There are certainly cheaper batteries out there, but I don’t think you will find anywhere near the quality of Epoch’s batteries in those less expensive batteries. That makes the battery about $100 cheaper than the similar capacity battery from Kilovault and a few hundred cheaper than one from Battleborn. The battery I’m testing currently sells directly from Epoch for $599.00. I, for one, would love to see a 400-amp-hour, 12-volt battery in the 48-volt, 100-amp-hour case. Epoch says they’re working on higher-capacity batteries.
The four parallel limit for the 100 amp-hour, 12-volt battery may be an issue for larger installations.
100 amp hour lithium battery series#
The remainder of the voltages allow two series and four parallel connections. The 12-volt batteries support up to four series and four parallel connections. Each voltage is available in 50 or 100-amp-hour capacity. Epoch’s 48-volt, 100 amp-hour batteryĮpoch offers a range of batteries in 12, 24, 36, and 48-volt options. So, it’s safe to say there’s plenty of LiFePO4 experience and expertise available for Epoch to draw on in designing their batteries. I recently learned Eve, one of the largest manufacturers of LiFePO4 cells, owns RoyPow. But the big question is, are these batteries more than just a pretty face? I’ve been putting a couple of their 100 amp-hour, 12-volt batteries to the test, and it sure looks like they have the goods to back up the design.Įpoch Batteries is a division of RoyPow energy. Epoch batteries’ line of LiFePO4 has design covered and an attractive list of features. Good design matters, even for a product you probably won’t spend much time admiring.
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