The T-875 8V flooded battery is a deep-cycle lead-acid battery designed for sustained power delivery in electric vehicles and industrial equipment. With a capacity of 170Ah at 8 volts, its flooded (wet cell) design enables frequent deep discharges and recharges, making it ideal for golf carts, mobility scooters, aerial work platforms, and low-speed electric vehicles requiring reliable traction power.
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What vehicles typically use T-875 batteries?
Golf carts and industrial utility vehicles primarily utilize T-875 batteries due to their high current output and deep cycling capability. These batteries provide 680Wh (8V × 170Ah) per unit, allowing extended runtime for slow-moving, high-torque applications.
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Six-cell configuration delivers 8V nominal voltage through lead plates submerged in sulfuric acid electrolyte. Designed for series connection (typically 4-8 units to create 32V-48V systems), they power 48V golf cart drivetrains when six batteries are connected in series. Pro Tip: Always equalize charge series-connected T-875 units monthly using specialized 48V chargers to prevent voltage imbalance. For example, a standard Club Car Precedent requires eight 6V batteries, but heavy-duty models may use six 8V T-875s for comparable voltage with higher amperage capacity.
Why choose flooded design over sealed batteries?
Flooded T-875 batteries offer 30% lower cost per cycle compared to AGM alternatives while supporting active electrolyte maintenance. Their removable vent caps enable periodic water replenishment and specific gravity testing.
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Deep-cycle construction uses thicker lead plates (3-4mm) versus starter batteries (1-2mm), sustaining 1,200+ cycles at 50% depth of discharge when properly maintained. While requiring monthly electrolyte checks, flooded types tolerate overcharging better than sealed batteries—a crucial advantage in solar-powered systems. However, they demand upright installation to prevent acid leakage, unlike vibration-resistant AGM batteries. For example, golf course maintenance fleets prefer T-875s for their serviceability, whereas urban delivery EVs often choose maintenance-free options despite higher costs.
| Parameter | T-875 Flooded | AGM Equivalent |
|---|---|---|
| Cycle Life (80% DoD) | 900 cycles | 600 cycles |
| Cost per kWh | $110 | $180 |
| Maintenance Interval | 30 days | None |
How does temperature affect performance?
T-875 batteries operate optimally between 20°C-25°C, with capacity dropping 1% per °C below 20°C. High temperatures accelerate water loss, requiring more frequent electrolyte checks.
At -10°C, available capacity decreases to ~65% of rated 170Ah, necessitating larger battery banks in cold climates. Charging voltage must adjust by ±3mV/°C per cell from 25°C reference—critical for winter charging. Pro Tip: Use insulated battery blankets below 0°C to maintain electrolyte fluidity. Golf courses in Minnesota report 18% longer T-875 lifespan versus AGM batteries when implementing temperature-compensated charging systems.
What maintenance ensures maximum lifespan?
Monthly electrolyte level checks and annual terminal cleaning are mandatory. Distilled water should maintain plates submerged by 6-8mm, avoiding overfilling that causes acid dilution.
Equalization charging every 30 cycles removes sulfate buildup, applying 9.6-10V per battery (15% higher than normal charge voltage) for 2-4 hours. Specific gravity should stabilize at 1.265±0.005 after equalization. For instance, Disney World’s fleet team extends T-875 life to 7 years through rigorous monthly maintenance—double the typical 3-5 year expectancy.
| Maintenance Task | Frequency | Impact |
|---|---|---|
| Water Refill | Monthly | Prevents plate exposure |
| Terminal Cleaning | Quarterly | Reduces voltage drop |
| Full Discharge Test | Annually | Identifies weak cells |
Can T-875 batteries be used in solar systems?
Yes, but charge controllers must compensate for the unique voltage profile. Flooded batteries require higher absorption voltage (14.4-14.8V for 12V systems) compared to AGM’s 14.2-14.6V range.
When configuring 48V solar arrays, six T-875s in series need a 57.6V absorption charge (9.6V × 6). Morningstar’s TS-MPPT-60 controller supports this with adjustable temperature compensation. However, frequent partial state-of-charge operation in solar applications accelerates sulfation—weekly full charges are essential. Off-grid cabins in Alaska successfully use T-875 banks with generator backup for winter reliability.
Redway Battery Expert Insight
How Long Can a Golf Cart Sit Unused?
FAQs
Replace when capacity drops below 80% of original 170Ah—typically 3-5 years with proper maintenance. Load testing every 6 months helps predict failure.
Can T-875s be stored discharged?
Never store below 50% SOC. Fully charge before storage and recharge every 3 months to prevent irreversible sulfation damage.
Are universal 8V chargers safe?
Use only chargers with flooded battery presets. Generic 8V lithium chargers risk undercharging, causing stratification and capacity loss.
