CyberPower BP36VL2U01 Extended Battery Module for Online UPS Systems
Overview
The CyberPower BP36VL2U01 is a 36V sealed lead-acid extended battery module designed to add runtime to compatible CyberPower online UPS systems — specifically the OL3KRTHD — in environments where longer ride-through during power events is non-negotiable. In a 2U rackmount chassis built from metal and finished in black, it integrates cleanly into standard 19-inch rack cabinets without consuming floor space. This is the module to reach for when you need more than the internal battery alone can deliver on a high-draw online UPS.
The BP36VL2U01 ships as a purpose-matched accessory for the OL3KRTHD, so you're not guessing at compatibility or doing voltage math — it's specified by CyberPower as the correct extension module for that platform.
Key Features
- 36V / 9Ah VRLA Battery Bank: Six sealed lead-acid (VRLA) cells in series deliver 36 VDC at 9Ah. VRLA chemistry means no electrolyte maintenance, no venting concerns in enclosed server rooms or IDF closets, and a predictable discharge curve that UPS management software can model accurately for runtime estimates.
- Six-Cell Configuration: Three pairs of 12V / 9Ah cells wired in series to reach the 36V bus. Replacing the internal battery module with this EBM extends the runtime curve proportionally to the OL3KRTHD's load — lighter loads see disproportionately longer runtime gains.
- 2U Rackmount Form Factor: At 87mm wide × 433mm tall × 470mm deep, the chassis occupies exactly 2U in a standard rack. Pair it directly below or above the host UPS to keep battery cabling short and neat. The metal housing handles the weight of the battery bank without flex.
- 0–40°C Operating Temperature Range: Rated for the same ambient envelope as most server room and network closet deployments. If your rack environment runs hot (above 40°C), de-rate expected battery life accordingly — heat is the primary killer of lead-acid chemistry.
- 0–90% Operating Relative Humidity (Non-Condensing): Broad humidity tolerance covers most commercial and light-industrial environments. Sealed construction prevents moisture ingress to the cells themselves.
- Storage Temperature Down to -15°C: If you're staging a deployment in an unheated warehouse or warehouse-adjacent space before install, the battery can sit in temperatures as low as -15°C without damage — useful for cold-climate staging scenarios.
- RoHS Compliant: Meets Restriction of Hazardous Substances requirements, which matters for enterprise procurement teams with compliance obligations and for facilities handling e-waste disposal.
- Metal Housing: The chassis is metal, not plastic — relevant for rack installations where physical robustness and heat dissipation matter. Also reduces fire-risk concerns in dense rack environments compared to lower-grade enclosures.
Integration and Compatibility
The BP36VL2U01 is specified as compatible with the CyberPower OL3KRTHD online double-conversion UPS. Before purchasing, confirm your host UPS model against that compatibility designation — CyberPower's online double-conversion line uses model-specific EBM connectors and voltage configurations that are not cross-compatible between product families. Do not attempt to connect this module to a line-interactive or standby UPS; the 36V bus and physical connector are specific to the supported online UPS platform.
For broader context on power protection strategy in surveillance and security infrastructure, review your power protection options alongside this module. Pairing an extended battery module with a correctly sized UPS system is the first step in any runtime planning exercise. If you're deploying the OL3KRTHD in a rack alongside network switches and NVRs, factor the BP36VL2U01 into your NVR power planning to ensure sufficient runtime for controlled shutdown or failover. For physical installation, verify rack space availability in your rack enclosure before ordering — 2U is a meaningful allocation in a fully loaded cabinet.
Frequently Asked Questions
Q: Which UPS models is the BP36VL2U01 compatible with?
A: CyberPower specifies the BP36VL2U01 as compatible with the OL3KRTHD online double-conversion UPS. Do not assume compatibility with other CyberPower models without verifying the EBM connector and voltage specifications.
Q: What battery technology does the BP36VL2U01 use?
A: It uses sealed lead-acid (VRLA) chemistry — six 12V / 9Ah cells configured in series to deliver a 36V / 9Ah battery bank. VRLA cells are maintenance-free and safe for enclosed rack environments.
Q: How much rack space does the BP36VL2U01 require?
A: The module occupies 2U in a standard 19-inch rack. Physical dimensions are 87mm (W) × 433mm (H) × 470mm (D).
Q: What is the operating temperature range for the BP36VL2U01?
A: The module is rated for 0°C to 40°C operating temperature. Storage temperature extends from -15°C to 45°C.
Q: Is the BP36VL2U01 RoHS compliant?
A: Yes, the BP36VL2U01 carries RoHS compliance certification.
Q: Does the BP36VL2U01 need any maintenance?
A: VRLA (sealed lead-acid) batteries are maintenance-free — no electrolyte topping or venting required. Battery replacement intervals depend on operating conditions, particularly ambient temperature; elevated heat shortens lead-acid service life.
The BP36VL2U01 does exactly one thing: it adds battery capacity behind a CyberPower OL3KRTHD online UPS. Six VRLA cells at 9Ah each — series-wired to a 36V bus — extend the runtime curve in a 2U metal chassis that fits cleanly in any standard rack. If you're sizing runtime for an NVR stack or a security head-end that needs more than the host UPS can deliver on internal batteries alone, this is the straightforward answer.
Technical Highlights:
- 36V / 9Ah VRLA Bank: Six 12V cells in series hit the 36V bus required by the OL3KRTHD. At lighter loads — say, 20–30% of UPS capacity — runtime extension is substantial; heavier loads compress the curve, so model your actual wattage before assuming hours of backup.
- 0–40°C Operating Range: Matches standard server room and IDF closet conditions. Beyond 40°C, lead-acid chemistry degrades faster — both in immediate capacity and in long-term cycle life. Keep the rack environment within spec or plan for shorter battery replacement intervals.
- Metal 2U Chassis: The all-metal housing handles the physical load of the battery bank reliably and dissipates heat better than plastic alternatives. At 470mm deep, verify your rack's usable depth before ordering — shallow two-post racks can be a tight fit.
Deployment Considerations:
- Confirm OL3KRTHD compatibility explicitly before deploying — CyberPower EBM connectors and bus voltages are not universal across their product line. This module is specified for the OL3KRTHD only.
- Storage humidity tolerance tops out at 95% non-condensing; staging in high-humidity environments (loading docks, outdoor-adjacent spaces) before install is fine, but avoid condensation on the terminals.
The BP36VL2U01 is the right specification for a security head-end or NVR rack where the OL3KRTHD is the host UPS and the internal battery runtime falls short of your controlled-shutdown or failover window — particularly in healthcare facilities, financial branches, or 24/7 surveillance operations where a graceful shutdown sequence requires more than a few minutes of ride-through.
