12V 101Ah Front Access AGM Telecom Battery — C&D TEL12-105FHTG

The C&D TEL12-105FHTG is a 12V 101Ah front-access AGM battery built for telecom and standby power that runs hot — cell sites, outdoor cabinets, and uncooled enclosures where a standard VRLA gives up years of service life. Sealed, non-spillable, and rated for a 12+ year design life! 

Heat is what shortens standby battery life. As a rule of thumb, every ~15°F above 77°F can cut lead-acid service life roughly in half, so a cabinet that runs warm turns a battery rated for a decade into a three-to-five-year replacement cycle, and every early failure is another truck roll. The TEL12-105FHTG is built for that environment: a high-temperature grid and MSE pure-lead plates rated to keep working from -40°F to +160°F.

Build features:

This is C&D part TEL12-105FHTG, the gas-collection (G) model in the TEL-HT family.

What this battery fits

Designed for telecom and standby power: cell sites, outdoor cabinets, CATV and broadband nodes, controlled-environment vaults, and UPS strings that run warm. The narrow front-terminal footprint drops into standard 19-inch and 23-inch relay racks.

Why a high-temperature AGM — and when you don’t need one

The reason to pay for a high-temperature battery is simple: in a hot cabinet, the grid is what fails first. The MSE pure-lead grid and high-temperature design are what let this battery hold a 12+ year design life where heat would cook a standard VRLA in a fraction of that.

If your gear lives in a climate-controlled room that stays near 77°F, you may not need to pay for the high-temperature build — a standard front-terminal VRLA will run fine and cost less. The TEL12-105FHTG earns its price when the cabinet actually runs hot. Not sure what yours runs at? Send us the site temperature and the load and we’ll tell you straight, even if the answer is the cheaper battery.

About the TEL12-105FHTG

It’s 12V and 101 Ah at the 8-hour rate (98 Ah IEC at the 10-hour rate), rated for up to 800 A maximum discharge with a low 0.0065-ohm internal impedance, so it holds voltage under heavy backup load. At a 1-hour rate it delivers roughly 70 A to cutoff; at the 8-hour rate, about 12.5 A.

Physically it measures 16.2 × 4.2 × 11.4 inches and weighs 72 lbs, on a front-terminal footprint built for 19-inch and 23-inch racks. The case is polypropylene with C&D’s Ohmic Ring™ post seal, and the terminals are threaded copper-alloy M6 inserts.

Design life is 12+ years, and the single biggest factor in reaching it is charging. Hold float at 13.65 VDC per 12V unit and temperature-compensate it (about 3.6 mV per cell per °C off 25°C). Overcharging in a hot cabinet is what ends a standby battery early.

How to make it last

Two things drive standby battery life: float voltage and temperature. Keep the charger at 13.65 VDC per unit with temperature compensation enabled, give the cabinet whatever ventilation you can, and check terminal torque at your normal maintenance interval. Get those right and 12 years is realistic; get them wrong in a hot cabinet and you’ll be back in the rack early.

Frequently asked questions

Not sure the TEL12-105FHTG fits your site? Send us your cabinet temperature and load, or call 1-877-775-4381 — we’d rather point you to the right battery than sell you the wrong one.