72V rack battery module for the Echo 3kVA ER UPS

The EBM72VRM2U is a 72V, 2U rack-mount external battery module designed by Uniti Power for the Echo ECH3000RMi2UER extended runtime online UPS. Because the ECH3000RMi2UER has no internal batteries, the EBM72VRM2U is what provides its backup power. One module gives a typical 3.7 minutes at full load, and up to four can be connected for a typical 26.0 minutes at full load.

Housing the batteries in separate modules means runtime can be matched to the protected load rather than fixed at the factory. Start with a single module and add more as autonomy needs grow, all within the same 19-inch rack as the UPS.

Compatibility

The EBM72VRM2U is designed for the Echo ECH3000RMi2UER, which uses a 72V DC battery system. The internal-battery Echo models, the ECH1000RMi2U and ECH2000RMi2U, are not listed for use with it. For any other configuration, confirm compatibility with Uniti Power technical support.

Runtime with the ECH3000RMi2UER

Runtimes are typical values for new, fully charged batteries at 25°C, provided as a guide only. Actual runtime depends on battery age, temperature and the type of load.

Installation

The Echo user manual describes the rack 72V battery module as six 12V 9Ah batteries in a 2U case measuring 438 x 86.3 x 418mm and weighing 22.4kg. Each module has an extending port: modules plug into one another in a chain, and the battery cable from the last module connects to the battery connector on the rear of the UPS. The manual sets out the connection steps, including checking polarity and making sure no hazardous voltage is present, and these should be followed exactly. Uniti Power offers installation and commissioning for complete Echo systems.

Battery care, warranty and support

Battery life is shortened by high temperatures and deep discharges. The user manual advises charging the batteries every 6 months if the UPS is not in use. Warranty terms for the EBM72VRM2U are set out on the warranty information page.

EBM72VRM2U questions answered

Which UPS is the EBM72VRM2U for?
The EBM72VRM2U is designed for the Echo ECH3000RMi2UER 3kVA extended runtime UPS, which has no internal batteries.

How many EBM72VRM2U modules can be connected?
Up to four EBM72VRM2U modules can be connected to one ECH3000RMi2UER.

How much runtime does one EBM72VRM2U add?
With one EBM72VRM2U, the ECH3000RMi2UER runs for a typical 3.7 minutes at full load and 23.9 minutes at 25% load.

How much rack space does the EBM72VRM2U take?
Each EBM72VRM2U takes 2U, the same height as the ECH3000RMi2UER power module.

How do I obtain the EBM72VRM2U?
Request a quote on this page, call 0845 561 0560, or find a Uniti Power partner near you.

Runtime figures are taken from the Uniti Power Echo Range Brochure (PDF). Battery module details are in the Echo 1-3kVA user manual, available from downloads.