Replacing a Wal-Mart 27DC6 battery involves careful disassembly, sourcing a compatible replacement, and proper installation. Designed for deep-cycle applications like RVs or marine use, the 27DC6 is a 12V battery with specific dimensions (L: 12.2″, W: 6.8″, H: 9.4″). Key steps include verifying voltage (12V), terminal type (standard top posts), and capacity (typically 85–105Ah). Always wear safety gear and follow OEM guidelines to avoid short circuits or acid leaks.
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How do I safely remove the 27DC6 battery?
Begin by disconnecting the negative terminal first to prevent accidental shorts. Use an 8mm wrench for terminals and a 10mm socket to unbolt the hold-down bracket. Pro Tip: Cover terminals with insulating tape to avoid metal contact during removal.
Disconnecting the negative terminal first is non-negotiable—reversing this order risks sparks igniting battery gases. After removing the bracket, tilt the battery slightly to check for corrosion on the tray. For example, a corroded tray might require baking soda cleaning before reinstalling the new battery. If the terminals are fused due to oxidation, apply a commercial battery cleaner and wait 10 minutes before twisting them loose. Transitioning to extraction, lift the battery vertically using both hands (average weight: 45–50 lbs). Never tilt it beyond 45°, as this could cause electrolyte leakage from vent caps. Pro Tip: Use a battery carrier strap for heavy units to avoid back strain.
What specifications must the replacement battery meet?
The replacement must match the group size 27, 12V voltage, and terminal orientation. Deviating risks fitment issues or electrical damage.
Group 27 batteries share standardized dimensions, but confirm the new unit’s height—some aftermarket models exceed 9.4″ and interfere with hoods or brackets. Voltage must stay within ±0.5V of 12V; a 12.6V lithium alternative requires a compatible charger. Terminal positioning (left/right positive) must mirror the original; reversing them forces cable rerouting, which might compromise reach. For example, an Odysseys 27-PC1500 has reversed terminals compared to standard 27DC6, making it incompatible. Transitioning to chemistry, flooded lead-acid remains the budget choice, while AGM offers spill-proof durability. Use this table to compare options:
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| Type | Cycle Life | Cost |
|---|---|---|
| Flooded | 300–500 | $100–$150 |
| AGM | 600–800 | $200–$280 |
What Makes the Expedition Deep Cycle RV Battery DC27 a Top Choice?
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FAQs
Yes, but only with a lithium-compatible charger and updated voltage regulator. Stock alternators often can’t charge lithium below 13.6V, leading to partial cycles.
How to dispose of the old 27DC6 battery?
Return it to Walmart’s automotive section—most stores offer $10–$20 core discounts. Never landfill lead-acid batteries; toxic leaks incur fines up to $10,000.
