BLF-12045W (9 hours at 10 W PEP, 7 hours at 20 W PEP) · Power
A battery, charger, controller, solar panel, filter, or station-power component.
Why operators make room for it
BLF-12045W gives a portable or backup radio station a defined 12-volt LiFePO4 power source instead of forcing the operator to build the power system around an unknown battery. This LiFePO4 battery is intended for customers who want quiet, portable DC energy for field operation, emergency readiness, or a station that must continue working away from commercial power. The published operating-time example (9 hours at 10 W PEP, 7 hours at 20 W PEP) is a planning reference tied to that stated transmit/receive duty cycle—not a universal runtime promise.
The built-in protection circuit manages cell balancing and helps protect against overcurrent, excessive discharge, overvoltage, and short circuits. Pair it only with the documented LiFePO4 charging equipment and connector arrangement. Those protections improve usability, but they do not replace correct fusing, cable sizing, connector polarity, ventilation, and load planning.
The real buying decision is operating time versus pack size and weight. A QRP station, a 100-watt HF transceiver, accessories, receive time, transmit duty cycle, mode, and output power all draw energy differently. Honest runtime scenarios, a clear connector path, and the radio-current limits make that tradeoff easier to judge than capacity alone.
Choose BLF-12045W when its documented voltage, capacity, current capability, connector, charger, and expected duty cycle match the station you intend to power. That turns a battery specification into something useful: a predictable amount of radio time that can be planned, carried, and recharged.
Quick product reference
Operator decision support
See what this product is best suited for, what the documented setup needs, and the boundaries to confirm before deployment.
Away from the grid, every amp-hour, connector, charging source, and transmit duty cycle becomes part of the station design.
Protect every circuit with the specified polarity, fuse, cable size, ventilation, and charging limits.
The Bioenno Power Lithium Iron Phosphate (LiFePO4) Battery (Model BLF-12045W) is a state of the art 12V 4.5Ah battery. Only marginally larger than the BLF-1203W, our smallest model, this unit is ideal for portable electronics applications where your device has low power consumption and requires a battery which like your device is small, light weight and extremely compact but extended run-time is required. The battery has an integrated PCM (protection circuit module) which provides complete internal cell balancing, complete integrated protection along with integrated charge circuitry. Additionally, like all Bioenno Power batteries with multiple connectors, you can discharge or charge through either connector! This unit has available a 110VAC/220 VAC AC-to-DC charger, that provides 2A with a DC Plug.
Includes built-in PCM (protection circuit module) which provides internal cell balancing and management, protection from overcurrent, undervoltage (overdischarge), overvoltage and short circuiting, and has integrated charging circuitry
Please note you can also use an adapter to convert the output connector from the battery to various outputs including a DC plug.
Please note that this battery should be charged using a LiFePO4 compatible charger, and not a charger for SLA batteries.
Battery Specifications
Compatible AC-to-DC Charger Specifications
IMPORTANT
In practice if you are not using the battery for more than 3 months, simply top off the battery using the BPC- wall charger every 3 months. You do not need to leave the BPC- wall charger attached to the battery all the time. Simply top off using the BPC- wall charger, the LED light on the charger turning from red to green. The 50% rule is only needed if you will not be using the battery for more than 1 year. In that case, you will need to discharge the battery to about 12.8 VDC and then disconnect the wall charger from the battery and store.
1. Easy returns
If you are not completely satisfied with your purchase, you may return it within 30 days, subject to a 20% restocking fee. Please note that international orders and items marked as Final Sale are not eligible for returns.
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Current order status, processing estimates, and delivery timing are provided through checkout and order updates.
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Customer service hours are Monday - Friday: 9am - 5pm PST. Please allow up to 1-2 days for someone to get back to you. We can be reached by phone at 888-628-9020 and by email here Customer Service
Overall rating: 5.0 / 5 from 2 reviews.
Review topics: [].
"I use this battery for my FX4CR for for both QRP and up to 20 watts. This battery fits nice in my pack and has slot of power for such a small form factor: I like the factory installed connectors as i can use both at the same time to power different components. Just make sure to have a 2 amp or less charger or a smaller solar setup as the max charge is 2 amps."
"I think this seems to be a good battery. _x000D_ I had to buy the charger. I got it separately. _x000D_ I thought I could charge the battery up _x000D_ With any old charger . But you do need the _x000D_ Charger that's special for this battery. _x000D_ Make shore to order both ."
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