A 24.7 percent published eight-hour-rating reduction failed the electrical equivalency check
Both blocks are nominally 12 V top-terminal batteries, but their current product flyers publish 125 Ah and 94.1 Ah at the eight-hour rate to 1.75 V per cell. Equipment record: Deka 12AVR130, companion identifier Deka 12AVR100. Decision: Reject the 12AVR100 as a like-for-like substitute for a 12AVR130 string unless a new runtime, charger, cabinet and short-duration performance assessment supports its lower published eight-hour rating.
Twelve volts does not establish equivalency
Stock availability can create pressure to treat voltage and terminal style as the complete compatibility test. A UPS string also depends on discharge performance, block count, dimensions, mass, terminal position, charger settings and the listing or manufacturer replacement conditions. A complete matched string avoids mixing unlike age and impedance within one series path, but it does not make two models electrically equivalent.
For Deka 12AVR130, the applicability boundary is anchored to 12 V, 125 Ah at 8 h and part Deka 12AVR100. The 3 worked inputs remain assumptions until they are recorded at the equipment.
Confirm availability and catalogue details for Deka 12AVR130 or Deka 12AVR100 on the catalogue of UPS replacement batteries page.
Figure 1. Deka 12AVR130 equipment and power path
Comparing the two Deka blocks
The controlling numerical record is: Nominal voltage of each block: 12 V; Published 12AVR130 rating: 125 Ah at 8 h; Published 12AVR100 rating: 94.1 Ah at 8 h; Worked series count: 16 blocks/string; Worked string voltage: 192 VDC; Published rating difference: 30.9 Ah at 8 h; Unverified runtime claim: 0 min claimed runtime. Each value has a defined source or assumption status in the engineering ledger. Values from different configurations are not combined as though they came from one installed system.
| Engineering parameter | Value | Evidence status |
|---|---|---|
| Nominal voltage of each block | 12 V | Published OEM value |
| Published 12AVR130 rating | 125 Ah at 8 h | Published OEM value |
| Published 12AVR100 rating | 94.1 Ah at 8 h | Published OEM value |
| Worked series count | 16 blocks/string | Worked design assumption |
| Worked string voltage | 192 VDC | Worked design assumption |
| Published rating difference | 30.9 Ah at 8 h | Published OEM value |
| Unverified runtime claim | 0 min claimed runtime | Worked design assumption |
The 12AVR100 published eight-hour rating is 30.9 Ah below the 12AVR130 value. Relative to 125 Ah, that is a 24.7 percent reduction. A 16-block series string remains 192 VDC nominal with either model, so the voltage check passes while the high-rate discharge and runtime checks remain open.
The 30.9 Ah and 24.7 percent difference
The worked check uses published rating reduction = (125 – 94.1) / 125 x 100. With 125 Ah for 12AVR130 and 94.1 Ah for 12AVR100, each at 8 h to 1.75 V per cell, the result is 24.7% lower published eight-hour rating. Equal nominal voltage cannot offset the lower rating and different short-duration discharge curve. The arithmetic is reproducible, but it remains a design check until the listed inputs are confirmed at the equipment.
The 24.7% lower published eight-hour rating result follows from published rating reduction = (125 – 94.1) / 125 x 100. If the 16 blocks/string input changes, this check is repeated rather than carrying the earlier result into a different operating state.
Figure 2. Quantified basis for the Deka 12AVR130 decision
String-level consequences of a smaller block
The comparison table must include the manufacturer high-rate discharge data at the required endpoint and duration. An Ah label measured at a long rate does not directly predict UPS runtime at a high-rate discharge.
Cabinet compatibility checks length, width, height, mass, terminal orientation, hardware, cable reach and required spacing. A smaller block may fit physically while leaving conductors unsupported or changing the approved restraint arrangement.
If engineering accepts a different model, every block in the affected string is replaced as a matched set unless the UPS and battery manufacturer explicitly support another method. Charger settings, battery declaration and post-work runtime are updated to the new design.
| Path | Technical consequence | Disposition |
|---|---|---|
| Apply the stated engineering decision | Reject the 12AVR100 as a like-for-like substitute for a 12AVR130 string unless a new runtime, charger, cabinet and short-duration performance assessment supports its lower published eight-hour rating. | Selected basis |
| Generic model substitution | Select by family name or rating alone, without confirming the exact configuration. | Not selected on the stated evidence |
| Unverified operating assumption | Treat a design assumption as though it were a site measurement. | Reconsider only if the input changes |
Confirm availability and catalogue details for Deka 12AVR130 or Deka 12AVR100 on the UPS selection and battery help centre page.
Confirm availability and catalogue details for Deka 12AVR130 or Deka 12AVR100 on the UPS system catalogue page.
The Deka 12AVR130 decision retains part Deka 12AVR100, the 24.7% lower published eight-hour rating calculation result and the manufacturer-published 12 V point in one equipment record. Applicable OEM instructions, qualified electrical authority and the installed single-line or wiring record remain controlling for any executable work.
Fit and discharge verification
Acceptance of Deka 12AVR130 depends on five recorded checks:
- Compare 12AVR130 and 12AVR100 high-rate discharge tables at the required endpoint.
- Confirm 12 V nominal voltage and the complete series block count.
- Check dimensions, mass, terminals, hardware, cable reach and restraint.
- Verify charger and UPS battery settings for the candidate string.
- Run the approved loaded acceptance test without claiming incumbent runtime in advance.
The Deka 12AVR130 record is not accepted if part Deka 12AVR100 does not match, the calculation does not reproduce 24.7% lower published eight-hour rating, or the final operating state is not recorded. The equipment returns to the approved safe state when a check stops, and the unresolved condition remains open without an invented repair result.
Figure 3. Verification sequence for Deka 12AVR130
Substitution requires a new runtime basis
The 12AVR100 fails a like-for-like screen because its published eight-hour rating is 24.7 percent lower than the 12AVR130. It can proceed only as a redesigned complete string with a new runtime and mechanical record.
GDF’s UPS service page covers field measurements and service work for Deka 12AVR130.
Decision rule: Reject the 12AVR100 as a like-for-like substitute for a 12AVR130 string unless a new runtime, charger, cabinet and short-duration performance assessment supports its lower published eight-hour rating. A different model, load, voltage, battery string, software version or operating state requires a new check against the applicable manufacturer record.
Sources
- East Penn Deka 12AVR130 flyer
- East Penn Deka 12AVR100 flyer
- GDF Technologies, internal engineering reference: UPS Maintenance/UPS Battery Testing and Condition Assessment.md
- GDF Technologies, anonymized field-case library, used only where the text identifies a retained field fact.