CyberPower BP48VL2U01TAA Sealed Lead-Acid Battery Module
Overview
The CyberPower BP48VL2U01TAA is a 48VDC sealed lead-acid battery cartridge designed for backup power systems in surveillance, access control, and network infrastructure environments. Eight 12V/9Ah lead-acid cells are stacked internally to deliver 48 volts at 70 amps continuous output — enough reserve capacity for extended runtime across door locks, controllers, and field devices during AC mains loss. The unit occupies only 2U of vertical rack space, making it compatible with standard 19-inch server cabinets without dedicated floor area.
Key Features
- 48VDC output, 70A continuous amperage: Direct current delivery supports a wide range of security controllers, access points, and powered devices without intermediate DC-DC conversion. The 70A rating means you can feed multiple simultaneous loads — door strikes, magnetic locks, auxiliary relays — without voltage sag or thermal shutdown.
- Eight 12V/9Ah sealed lead-acid cells in series: Each cell is factory-sealed and maintenance-free, eliminating the need for water top-ups or equalization. Sealed construction also prevents acid fumes in confined server-room environments.
- 4-hour recharge cycle (0% to 90%): When grid power returns, the BP48VL2U01TAA reaches 90% state-of-charge in four hours — a practical window for 24/7 facilities to restore full reserve without extended downtime. This matters on sites with frequent brown-outs or scheduled maintenance windows.
- 10A circuit breaker onboard: Protects against short-circuit faults and external load surges, reducing risk of internal cell damage and extending battery life across thermal cycles.
- Input voltage range 100–125 VAC nominal 120V: Accepts North American standard AC mains without voltage conditioners. The 25V tolerance window handles typical utility variance and small UPS output swings without charger shutdown.
- 2U rack height, 17.05 x 3.41 x 18.5 inches: Fits any 19-inch cabinet between servers, network switches, or PoE switches. The compact vertical footprint preserves cable routing and airflow paths in tight installations.
- Thermal dissipation 74 BTU/hr online: Sealed lead-acid chemistry generates modest heat — 74 BTU/hr is manageable in standard cabinet cooling. Verify your existing ventilation handles this margin if the cabinet is already thermally loaded.
- Operating temperature range 0–40°C (32–104°F); storage to 45°C: Lead-acid performance degrades in sustained heat above 40°C. If your server room runs warm, consider ambient cooling or derating run-time expectations in summer.
- CSA C22.2 NO.107.3 and UL 1778 certified: Meets North American safety standards for industrial battery equipment. FCC Part 15 Class A means minimal electromagnetic noise in control-room environments.
- 3-Year Limited Warranty: Manufacturer warranty covers defects in materials and workmanship for three years from purchase, standard for sealed lead-acid modules in this class.
Integration & Compatibility
The BP48VL2U01TAA is a battery cartridge only — it requires a compatible charging rectifier or UPS module to manage AC input, regulate charging, and handle load switching. Confirm your existing power system (CyberPower or third-party) supports 48VDC output before ordering. The 70A output is suitable for low-voltage security loads: door controllers, electric strikes, magnetic locks, auxiliary relays, and sensor arrays common in access control and CCTV recorder backup scenarios. High-current devices (above 70A aggregate) will require parallel battery cartridges or a larger power solution.
The sealed design eliminates need for dedicated ventilation or acid containment — a practical advantage in shared IT closets. Weight of 65.26 lbs means two technicians can install it safely; heavier than portable UPS batteries but light enough for standard server-cabinet mounting hardware.
What's in the Box
The BP48VL2U01TAA ships as a single battery cartridge. Mounting hardware (rack rails, L-brackets) and interconnect cables must be sourced separately based on your cabinet type and existing power-system configuration. Consult the installation guide or contact your system integrator for compatible mounting kits.
Frequently Asked Questions
Q: What's the expected lifespan of the eight 12V/9Ah cells inside the BP48VL2U01TAA?
A: Sealed lead-acid batteries typically deliver 300–500 full charge cycles under normal conditions (room temperature, regular maintenance charging). In standby-only applications (powered continuously, discharged only during outages), expect 3–5 years before capacity drops below 80%. Temperature has the biggest impact: sustained operation above 40°C significantly shortens lifespan.
Q: Can I parallel two BP48VL2U01TAA cartridges to double the amperage to 140A?
A: Parallel connection is not recommended without expert engineering and proper load-sharing circuits. Mismatched cell voltages between cartridges can cause dangerous circulating currents. If you need higher current capacity, consult the manufacturer or a qualified integrator for a larger single-unit solution.
Q: Is the BP48VL2U01TAA NDAA compliant?
A: NDAA Section 889 compliance is not documented in the product specifications. If your project has federal procurement restrictions, contact the vendor or manufacturer directly to confirm country-of-origin and supply-chain status.
Q: How do I know when the battery is ready to replace?
A: Most compatible charging systems include capacity-monitoring and low-voltage alarm outputs. When capacity drops below 80% (typically 3–5 years of service), or if the battery fails to hold a charge, it should be replaced. Do not attempt to recondition sealed lead-acid cells in-house — return to manufacturer or licensed recycler.
Q: What happens if the BP48VL2U01TAA overheats in a warm cabinet?
A: Sustained temperatures above 40°C reduce cell lifespan and charge acceptance. If your cabinet runs hot, the 4-hour recharge time will extend, and run-time during an outage will be reduced. Consider supplemental cooling or moving the battery to a cooler location if cabinet temperatures regularly exceed 35°C.
Q: Does the 10A circuit breaker reset automatically?
A: The 10A breaker is a manual reset thermal fuse — it trips on sustained overload or short circuit and must be manually reset after the fault is cleared. This prevents repeated nuisance trips during transient surges but requires physical access to the unit.
The BP48VL2U01TAA is a solid backup-power cartridge for access-control and low-voltage security racks where you need guaranteed hold-up time during AC mains failure. The 48VDC / 70A continuous output is realistic for feeding door controllers, electric strikes, and sensor arrays in a mid-sized facility — and the 4-hour recharge cycle means you recover full reserve capacity quickly after a brief outage. The 2U rack form is the real win here: fits cleanly alongside servers and switches without eating floor space or forcing a separate cabinet.
Technical Highlights:
- Eight 12V/9Ah sealed cells in series stack: Stacking eliminates maintenance headaches — no water top-ups, no equalization, no acid fumes in your IT closet. That sealed construction is worth the upfront cost on shared-infrastructure sites.
- 70A continuous amperage output: Real-world security loads (door strikes drawing 5–8A each, controllers pulling 2–3A) can run 10+ devices simultaneously without voltage collapse. The onboard 10A breaker handles short-circuit protection — won't stop a genuine load spike, but saves the cells from catastrophic failure.
- 4-hour 0–90% recharge, 100–125 VAC input window: North American utility variance is absorbed without charger resets. The 4-hour cycle is forgiving on sites with frequent brief outages — you're back to full reserve before the next incident.
Deployment Considerations:
- Lead-acid performance craters in sustained heat above 40°C — if your cabinet runs warm, run-time in a real outage will be 20–30% shorter than nameplate, and cell lifespan drops fast. Install a cabinet thermostat and force supplemental cooling if peak temps exceed 35°C.
- The 10A breaker is manual-reset only, not automatic. Test the reset mechanism during commissioning — a stuck breaker during an actual outage is a bad discovery.
- Weight is 65.26 lbs — not a one-person lift, but manageable with two techs. Confirm your rack frame can accept the mounting rails; standard 19-inch cabinet frames handle it fine, but older or lightweight frames may need extra support brackets.
This cartridge shines in access-control backup scenarios where runtime matters more than rapid switchover speed. Pair it with a compatible CyberPower rectifier or UPS front-end for charging and load management, and you've got reliable hold-up power for a multi-door facility during utility loss or scheduled maintenance windows.
