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DEKA Unigy Fahrenheit HT170ET Heat Tolerant Series Battery
DEKA Unigy Fahrenheit HT170ET Heat Tolerant Series Battery
Deka Fahrenheit HT170ET Battery - 12V 185 Ah Heat Tolerant AGM
Warranty
185 Ah for the Hot Site
- Helios additive - reduces float current by up to 75 percent per East Penn, limiting the internal heating that shortens VRLA life in a warm cabinet.
- Microcat catalyst - lowers float current and mitigates thermal buildup and cell dryout.
- TempX alloy grids - corrosion resistance at temperature extremes on a greater than 98 percent pure lead positive.
- THT case compound - heat-resistant plastic 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; epoxy-sealed posts and 100 percent factory-tested valves.
Technical Specifications
| Deka Fahrenheit HT170ET Specifications | |
|---|---|
| Part Number | HT170ET (also searched as HT 170ET, deka ht170et, unigy fahrenheit ht170et, fahrenheit ht170; the ET denotes the front-access terminal case) |
| Battery Type | Heat tolerant AGM VRLA, front access, telecom float service |
| Nominal Voltage | 12V |
| Nominal Capacity | 185 Ah at the 8-hour rate to 1.75 VPC at 77°F (20.5 A for 8 hours) |
| Discharge, 1-hour rate | 108 A to 1.75 VPC |
| Discharge, 4-hour rate | 36.6 A to 1.75 VPC |
| Discharge, 20-hour rate | 9.1 A to 1.75 VPC |
| Discharge, 24-hour rate | 7.7 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 | 22.13 inches (562 mm) |
| Width | 4.97 inches (126.3 mm) |
| Height | 12.58 inches (319.6 mm) |
| Weight | 128 lbs (58 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
- Unconditioned outdoor cabinets with long reserve requirements - 48V strings sized on the 8-hour or 20-hour rate where the enclosure runs hot.
- Remote huts and shelters - sites where a standard block has aged out early and the replacement should tolerate the room it lives in.
- Hot-climate front-access shelves - the 4.97 inch shelf cut shared with the standard Unigy I front-terminal blocks.
Ordering and Freight
Frequently Asked Questions
Is the HT170ET a 170 Ah battery?
East Penn's current flyer, Form 2236, rates it at 185 ampere-hours at the 8-hour rate to 1.75 volts per cell at 77°F. The 170 is the model designation. Figures other than 185 circulate for this part on older sheets; the current East Penn flyer governs, and 185 Ah is the number to size against.
HT170ET or HT200ET: is the extra 5 Ah worth the weight?
The two are close in capacity, 185 against 190 Ah at the 8-hour rate, and both are Fahrenheit blocks with the same term and design life. The HT170ET is 23 lbs lighter per block, 128 against 151, and 0.16 inches shorter. On a four-block string that is 92 lbs less on the shelf and on the freight bill for a capacity difference of under three percent. If the reserve calculation clears at 185 Ah, the HT170ET is the lighter answer; if the plant standard names the HT200ET, match it.
How does the HT170ET compare with the standard 12AVR170ET?
Same 4.97 inch front-access shelf cut and nearly the same height, but different jobs. The 12AVR170ET is a standard Unigy I block rated 170 Ah with a 10-year design life and a 4-year East Penn term, at 119 lbs. The HT170ET is the Fahrenheit build, 185 Ah, 12-year design life, 6-year term at 77°F, at 128 lbs, with the heat-management chemistry the standard block does not carry. In a conditioned room buy the 12AVR170ET; in a cabinet that runs hot, the HT170ET is the block built for it.
How long will a 48V HT170ET string hold a 9 amp load?
About 20 hours. East Penn's table gives 9.1 amps for 20 hours to 1.75 volts per cell at 77°F, and 7.7 amps for 24 hours. A 48V string of four blocks in series delivers the same current as one block, so a steady 9 amp plant load runs to the 20-hour point before the string reaches end voltage. Send the load and the reserve requirement and a specialist reads the exact figure from the published table.
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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