How Do I Care for My Sealed Lead Acid Batteries?
- Luck e-Carts LLC
- 3 days ago
- 8 min read
A Guide to getting the most life, power, and value from your WorkOx Trucks and Luck e-Carts battery pack
Published by WorkOx Trucks | Luck e-Carts LLC
You're WorkOx Trucks operate with a standard 72V 64Ah sealed lead acid (SLA) battery pack, while your Luck e-Carts use a standard 60V 32Ah SLA battery pack. These battery packs consist of six 12V batteries, and each battery can cost around $250.00 to replace. Treat them right, and they'll serve you reliably for years. Treat them poorly, however, and you'll be shopping for replacements far sooner than you'd like.
Keep reading for a walkthrough of what these batteries are made of, how they work, and how to care for them properly, so you get every last amp-hour out of your investment.
What Is a Sealed Lead Acid Battery, Anyway?
Let's start with the basics, since understanding what's inside your battery is the first step to understanding how to care for it.
The Building Blocks: Individual Cells
A single lead acid cell produces about 2 volts. So, for example, for a WorkOx Truck to produce 72 volts, its battery pack consists of six individual 12V batteries (containing 6 cells each), meaning its 72V pack has 36 cells connected in series (positive to negative) to stack their voltages.
Each cell is built like a sandwich:
Positive plates made of lead dioxide (PbO₂), a dense, dark reddish-brown material
Negative plates made of sponge lead (Pb), a soft, porous grey metal
Separators made of thin porous sheets that keep the plates from touching each other while still letting ions pass through
Electrolyte, a mixture of sulfuric acid and water that acts as the chemical highway between plates
Why "Sealed"?
Traditional flooded lead acid batteries have removable caps so you can top them up with distilled water. Sealed lead acid batteries are different: these batteries use one of two technologies to recapture the gases produced during charging.
AGM (Absorbent Glass Mat): The electrolyte is absorbed into fiberglass mats packed tightly between the plates. No free liquid. Very spill-proof and vibration-resistant.
Gel: The electrolyte is mixed with silica to form a thick gel. Excellent heat tolerance and very deep-cycle capable.
Both types have a small pressure-relief valve that vents only if pressure builds up dangerously, hence "sealed." Under normal conditions, you never need to open or add water to them.
Your WorkOx Trucks and Luck e-Carts come standard with gel lead acid batteries. However, these vehicles will operate with either Gel or AGM batteries.
What Does 64Ah / 32Ah Mean?
The Ah (amp-hour) rating tells you the battery's storage capacity.
So, for example, your WorkOx Truck's 64Ah battery bank can theoretically deliver:
64 amps for 1 hour, OR
32 amps for 2 hours, OR
8 amps for 8 hours
Combined with the 72V, this gives you a total energy capacity of roughly 4,608 watt-hours (4.6 kWh) ... enough to power a 1,000-watt motor for over 4 hours under ideal conditions.
How do These Batteries Actually Work?
When you use the battery (discharge), here's what happens in simple terms at a chemical level:
Discharging: The sulfuric acid in the electrolyte reacts with both sets of plates. Lead sulfate crystals form on both the positive and negative plates, and electrons flow through your external circuit (your motor, controller, lights) as electrical current. The acid gradually becomes weaker as it's consumed.
Charging: Supply electricity back into the battery in reverse, and the reaction runs backward. The lead sulfate breaks down, the plates return to their original materials (lead dioxide and sponge lead), and the acid restores its strength.
The problem - sulfation: If the battery sits discharged for too long, or is repeatedly undercharged, those lead sulfate crystals harden permanently onto the plates. This is called sulfation, the number one killer of lead acid batteries. Hard sulfate crystals can't be converted back, and they reduce the battery's capacity and ability to accept a charge.
The Golden Rules of Battery Care
Now that you know what's going on inside your batteries, let's talk about how to keep them healthy and long-lived.
1. Charge Immediately After Every Use
This is the single most important rule. Lead acid batteries should never sit in a discharged state. Every hour a battery spends discharged, sulfation builds up on the plates.
Develop this habit: Plug in your charger as soon as you're done using your vehicle. Don't wait until the next morning. Don't wait until the weekend. Charge the batteries right away.
If you store your vehicle and won't be using it for a while, charge the batteries to full before storage, and then recharge them every 4–6 weeks to prevent self-discharge from dropping the charge too low.
2. Don't Drain It Dead: Respect the Depth of Discharge
Lead acid batteries are sensitive to how deeply you drain them. This is called Depth of Discharge (DoD), and it directly determines how many cycles your battery will last.
Here's the general relationship:
Depth of Discharge | Approximate Cycle Life |
20% (very shallow) | 1,500–2,000+ cycles |
50% (moderate) | 500–700 cycles |
80% (deep) | 200–300 cycles |
100% (full drain) | 100–150 cycles |
If you're regularly draining your battery pack down to nearly zero before recharging, then you're dramatically shortening its life. Try to recharge when you've used about 50% of capacity. Never run it until the equipment shuts off from low voltage if you can help it.
3. Use the Right Charger and Charge Fully
Always use the smart battery charger provided with your WorkOx Trucks or Luck e-Carts. Their battery packs need a charger specifically designed for lead acid chemistry. Using an undersized, oversized, or wrong-chemistry charger will damage your batteries.
A proper charge cycle has three stages:
Bulk charge. The charger pushes current in at a high rate to restore most of the capacity (usually up to about 80%)
Absorption charge. The voltage holds steady while current gradually tapers off, filling the last 20%
Float charge. A low-level trickle maintains full charge without overcharging
Always let the charger complete all three stages. Stopping the charger during bulk charge leaves the battery partially filled, and doing this repeatedly is just as harmful as undercharging.
Signs of a bad charger situation: If your charger gets extremely hot, if it clicks on and off repeatedly, or if batteries are warm after charging (slightly warm is normal - hot is not), have the charger and battery pack inspected.
4. Hot Weather: The Silent Accelerator of Aging
High heat is a battery's enemy. Chemical reactions inside the battery speed up as temperature rises, which sounds like a good thing, but it means the battery ages faster: water is consumed faster (even in sealed batteries, electrolyte can be lost over time) and the risk of overcharging damage increases.
In hot climates or summer months:
Store and charge your vehicle in a cool, shaded area whenever possible
If the battery pack feels hot after use, let it cool down for 30–60 minutes before charging
Battery performance and lifespan begin noticeably degrading above 77°F (25°C). At 95°F (35°C), battery life can be cut nearly in half. At 113°F (45°C), damage can be rapid and severe.
Your WorkOx Trucks and Luck e-Carts use gel lead-acid batteries which have a reputation for handling high temperatures better than AGM batteries. Gel batteries use stiffened electrolyte, which helps minimize fluid evaporation and resist thermal degradation (keep in mind: even with gel batteries, heat accelerates chemical wear and will still reduce overall battery lifespan). Also, gel batteries do not sulfate as quickly, providing consistent power under harsh, high-heat deep cycling
5. Cold Weather: The Power Thief
Cold doesn't kill batteries the same way heat does, but it does steal your usable capacity, sometimes dramatically. At 32°F (0°C), a lead acid battery delivers roughly 70–80% of its rated capacity. At 0°F (-18°C), that can drop to 50% or less. Your equipment may feel sluggish, range will be shorter, and voltage may sag more under load.
In cold weather:
Store batteries indoors overnight if temperatures will drop below freezing; keeping your vehicle in a heated space will help it perform far better the next morning
Warm the battery pack up before heavy use if possible (even 30 minutes at room temperature helps)
Expect reduced range and performance: don't try to compensate by draining deeper than usual
Charge batteries indoors where it's warmer; batteries don't charge efficiently when they're very cold, and charging a frozen battery can damage it
On the flip side, cold temperatures slow the chemical aging process, so batteries stored in a cool (but not freezing) environment actually age more slowly. A basement or climate-controlled garage is ideal for long-term storage.
6. Check Your Connections Regularly
In your vehicles' battery packs, you have multiple batteries wired together, which means multiple connection points. If you allow your connections to become loose, corroded, or dirty, this can cause:
Voltage drop and power loss
Uneven charging across individual batteries (one battery works harder than others and wears out faster)
Heat buildup at the connection point, which can damage cables and connectors
Therefore, every few months (if not sooner, depending on daily usage) you should inspect all terminal connections for corrosion (white or blue-green powdery buildup), tighten any loose nuts or bolts, and clean terminals with a baking soda and water solution if needed. Apply a thin coat of dielectric grease or terminal protector spray after cleaning.
7. Watch for the Weak Link
In a series-connected battery pack, one weak battery degrades the entire pack. If one of your batteries has suffered sulfation or plate damage, the others will be forced to overcompensate. The weak battery gets overcharged while the healthy ones get undercharged.
Signs of a weak battery in the pack:
Uneven voltage readings across individual batteries after a full charge (they should all read approximately the same)
One battery gets significantly hotter than the others during charging
Capacity and range keep declining even though you're caring for the pack properly
If you identify a weak battery, replace it promptly. Continuing to run a bad battery in the pack will shorten the life of all the others. Ideally, replace batteries in matched sets from the same manufacturer and production batch.
8. Store Smart for Long Periods
If the equipment will be unused for more than 30 days:
Charge the pack fully before storage
Store in a cool, dry place, ideally between 50°F and 70°F (10°C–21°C)
Recharge every 4–6 weeks during storage
Never store in a completely discharged state
Keep the pack off concrete floors if possible: a wooden pallet or shelf is better (this is an old rule of thumb; modern batteries are less vulnerable than vintage ones, but it's still good practice)
Quick Reference: Battery Care Cheat Sheet
Situation | Best Practice |
After every use | Charge immediately |
Daily discharge depth | Keep above 50% charge |
Hot weather (>85°F) | Charge in cool area; let battery cool before charging |
Cold weather (<40°F) | Store indoors; expect reduced range |
Long-term storage | Full charge; recharge every 4–6 weeks |
Connections | Inspect at least every 3 months; keep clean and tight |
One bad battery | Replace immediately; consider replacing all in set |
Charger | Use only a quality lead acid charger; complete full cycle |
The Bottom Line
Your WorkOx Trucks and Luck e-Carts sealed lead acid battery packs not only offer you powerful, proven technology, they also reward attentive ownership.
The principles are simple:
keep your batteries charged
don't drain your batteries dead
protect your batteries from temperature extremes
take care of your battery connections
Follow these habits consistently and your battery pack can deliver hundreds of reliable charge cycles and years of dependable service.
If you have questions about your battery pack, replacement battery options, or battery testing equipment, reach out to us. We're here to help you get the most out of your battery packs.
WorkOx Trucks is a brand of Luck e-Carts LLC, an Arizona-based supplier of commercial, industrial & personal electric, three-wheel utility vehicles.
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