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Unigy Fahrenheit HT150ET Heat Tolerant Series Battery
Unigy Fahrenheit HT150ET Heat Tolerant Series Battery
Deka Fahrenheit HT150ET Battery - 12V 149 Ah Heat Tolerant AGM
Warranty
The Hot-Cabinet Version of a 150 Ah Block
- Float current cut by up to 75 percent - the Helios additive, per East Penn, which is the mechanism that limits internal heating on a hot site.
- Microcat catalyst in the vent - lowers float current further and works against the thermal buildup and cell dryout that end VRLA life in heat.
- TempX alloy on pure lead grids - positive plates over 98 percent pure lead with an alloy East Penn specifies for corrosion resistance at temperature extremes.
- THT case compound - a heat-resistant formulation that holds plate compression, UL 94 V-0 with a limiting oxygen index above 39 percent.
- Standards on the flyer - UL 1973 certification for energy storage, UL recognition requirements, IEEE recommended practices; IPF plate forming throughout.
Technical Specifications
| Deka Fahrenheit HT150ET Specifications | |
|---|---|
| Part Number | HT150ET (also searched as HT 150ET, deka ht150et, unigy fahrenheit ht150et, fahrenheit ht150; the ET denotes the front-access terminal case) |
| Battery Type | Heat tolerant AGM VRLA, front access, telecom float service |
| Nominal Voltage | 12V |
| Nominal Capacity | 149 Ah at the 8-hour rate to 1.75 VPC at 77°F (18.6 A for 8 hours) |
| Discharge, 1-hour rate | 100 A to 1.75 VPC |
| Discharge, 4-hour rate | 33.2 A to 1.75 VPC |
| Discharge, 10-hour rate | 15.3 A to 1.75 VPC |
| Positive Plate | Greater than 98% pure lead, tin-calcium alloy, TempX |
| Negative Plate | Pure lead, calcium alloy |
| Catalyst | Microcat |
| Terminal Type | Front access, 1/4-20 threaded insert, epoxy-sealed posts |
| Length | 22.17 inches (563 mm) |
| Width | 4.97 inches (126.3 mm) |
| Height | 11.63 inches (295.5 mm) |
| Weight | 103 lbs (47 kg) |
| Float Charging Voltage | 13.50V per battery ±0.5% at 77°F (range 13.42V to 13.57V) |
| Case Material | Flame-retardant THT compound, UL 94 V-0, >39% limiting oxygen index |
| Valves | Low positive pressure, self-sealing, flame arrestor |
| Standards | UL 1973; UL recognition; IEEE recommended practices |
| Design Life | 12 years in float applications at 77°F (East Penn) |
| Warranty | 6 years at 77°F (East Penn, Fahrenheit HT line) |
| Minimum Order | 4 units |
Where This Battery Is Used
- Outdoor telecom cabinets without air conditioning - 48V strings of four where summer cabinet temperature is the life-limiting factor.
- Huts and shelters with failed or marginal cooling - sites where a standard block has been replaced early more than once.
- Hot-climate front-access shelves - the same 4.97 inch shelf cut as the standard Unigy I front-terminal blocks.
Ordering and Freight
Frequently Asked Questions
HT150ET or 12AVR150ET for the same shelf?
Same footprint, different service temperature. The 12AVR150ET is a standard Unigy I block, 150 Ah at the 8-hour rate with a 10-year design life and a 4-year East Penn term. The HT150ET is the Fahrenheit build in the same case, 149 Ah with a 12-year design life and a 6-year term at 77°F, carrying the heat-management measures the standard block does not. In a conditioned room the standard block is the ordinary choice. In a cabinet that spends summers above room temperature, the HT150ET is built for the conditions and its term and design life reflect that. Send the site's typical cabinet temperature and a specialist will say which one to price.
Why does the HT150ET table stop at the 10-hour rate?
East Penn's Form 2448 publishes discharge currents from 1 hour to 10 hours for this block, where the standard Unigy I flyers run to 24 hours. The 10-hour figure is 15.3 amps to 1.75 VPC, which works out to 153 Ah at that rate. For reserve calculations past ten hours, send the load and the required reserve and a specialist asks East Penn for the extended figures rather than extrapolating from the table.
Does the heat tolerance change the charger setting?
The float voltage on the flyer is the same 13.50 volts per battery, plus or minus 0.5 percent at 77°F, as the rest of the Deka 12V range. East Penn publishes a separate Fahrenheit installation and operating manual, Form 2100, which covers temperature compensation for this line. Set the plant to that manual rather than to the standard Unigy I manual, and record the setting at commissioning.
Is the HT150ET a UPS battery or a telecom battery?
East Penn markets the Fahrenheit line for telecom and data center sites alike, and the block is amp-hour rated for reserve time rather than watt-rated for a fifteen-minute UPS discharge. Use it where the string is sized in ampere-hours over hours and the site runs hot. For high-rate UPS ride-through in a hot room, ask a specialist about the High Rate series and the site conditions together.
Send the quantity, your delivery ZIP and your requested-by date. A specialist confirms availability, the warranty term, volume pricing and freight in writing, with no obligation to buy.
Call 1-877-775-4381 · battery specialists, not a call centerWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov (State of California only).
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