Replacing a Walmart 29DC battery involves safely removing the old unit, installing a compatible replacement, and ensuring proper connections. Start by disconnecting the negative terminal first to prevent short circuits. Use a 10mm wrench for terminal bolts, secure the new battery with its hold-down bracket, and test voltage (ideally 12.65V+ when fully charged). Always recycle the old battery at a Walmart Auto Care Center or approved facility.
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What tools are needed for 29DC battery replacement?
Essential tools include a 10mm wrench for terminals, gloves, and safety goggles. Optional items: battery terminal cleaner, anti-corrosion spray, and a multimeter to verify voltage (12.6–12.8V optimal). Pro Tip: Lay a towel under the battery to catch acid spills during removal.
How do I safely disconnect the 29DC battery?
Always disconnect the negative terminal first (black cable) using a 10mm wrench to avoid accidental grounding. For the positive terminal (red), wrap it in electrical tape post-removal. If corrosion is present, neutralize it with baking soda/water paste. Example: A corroded terminal can cause voltage drops—cleaning improves conductivity by 15–20%.
Is the Walmart 29DC compatible with my RV?
The 29DC is a Group 29 deep-cycle battery designed for RVs, marine use, and golf carts. Verify dimensions (13″ L x 6.8″ W x 9.4″ H) and terminal orientation (top-post, positive on left). Check your RV manual—some models require dual 6V batteries instead. Example: A 29DC typically provides 120–130Ah, suitable for mid-sized RVs with moderate power needs.
| Battery Type | Capacity (Ah) | Use Case |
|---|---|---|
| 29DC | 120–130 | Single-battery RVs |
| GC2 (6V) | 200–220 | Dual-battery systems |
How do I secure the new battery properly?
Use the original hold-down bracket or a universal kit to prevent vibration damage. Tighten bolts to 8–10 ft-lbs—over-tightening cracks the case. Position terminals away from metal surfaces (minimum 1″ clearance). Pro Tip: Apply dielectric grease on terminals to prevent future corrosion, which can add 2–3 years to battery life.
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What if my new 29DC battery won’t hold a charge?
Test voltage: below 12.4V after 24 hours indicates a defective cell or sulfation. Check for parasitic drains (e.g., RV clock, inverter) drawing >50mA. If bought at Walmart, return within 90 days (free replacement). Example: A fridge left on during storage can drain a 29DC in 10–14 days, mimicking a faulty battery.
| Issue | Voltage Range | Solution |
|---|---|---|
| Normal | 12.6–12.8V | N/A |
| Sulfation | 12.2–12.4V | Equalization charge |
| Defective | <12.0V | Replace |
Redway Battery Expert Insight
FAQs
Yes—Redway’s 12V 100Ah lithium battery fits Group 29 trays and provides 1280Wh vs. 29DC’s 1536Wh. However, it’s 30 lbs lighter and supports 2000+ cycles vs. 500 in lead-acid.
How to recycle the old 29DC battery?
Walmart Auto Centers accept old batteries for $12–$15 core fee reimbursement. Many states legally prohibit landfill disposal due to lead content.
Does Walmart test replaced batteries?
Yes—their free load-testing service identifies voltage drops under simulated loads (e.g., 50% capacity = replace). Always test before leaving the store to avoid installation hassles.
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