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Molicel P42A 21700 4200mAh 10C 45A Battery

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Price range: $5.53 through $116.57

💡 Pro Tip: First 50g air shipping is $7.00 — ordering 6+ cells slashes your shipping cost per cell by over 70%!

ModelINR-21700-P42A
Capacity4200mAh
ChemistryRechargeable lithium-ion
Discharge45A listing rating; confirm operating limit
TerminalConfirm terminal configuration before order
Key product information
  • Brand: Molicel.
  • Model / SKU: INR-21700-P42A.
  • Listed capacity: 4200mAh.
  • Listed current rating: 45A; confirm system limits before use.

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Description

Product overview

Molicel P42A 21700 4200mAh 45A Battery is a 4200mAh 21700 rechargeable cell option from Molicel for battery-pack, equipment and replacement applications. Electrical limits and compatibility must be confirmed for the finished system.

Key product details

Brand Molicel
Model / SKU INR-21700-P42A
Product type 21700 rechargeable cell
Capacity 4200mAh
Current rating 45A
Terminal / fit Confirm terminal configuration before order

This is a rechargeable battery product intended for compatible equipment or professionally engineered packs. Use suitable protection, insulation, charging controls and thermal management; never short-circuit, crush, puncture or use a damaged cell.

 

⚠️ IMPORTANT WARRANTY & DOA NOTICE (BARE CELLS & UAV BATTERIES)

Excluded from 12-Month Commercial Warranty — DOA Replacement Policy Only Bare lithium cells (non-resalable once altered) and UAV/drone battery packs (high-drain consumables with no guaranteed cycle lifespan) are excluded from our 12-month commercial warranty and are covered exclusively by our 30-Day DOA (Dead on Arrival) Policy:

  • Mandatory 14-Day Non-Destructive Inspection: You must test initial voltage and charging capability within 14 calendar days of receipt — BEFORE spot-welding/soldering (for bare cells) or mounting/flight use (for UAV packs).

  • Strictly Non-Returnable Once Altered or Used (100% Diminished Value): Non-destructive multimeter/charger testing is the only permitted inspection upon delivery. Bare cells that have been spot-welded, soldered, glued, or assembled (becoming inseparably mixed with other components), and UAV packs that have been mounted, flown, cycled, or over-discharged, suffer a 100% loss in resale value and are strictly ineligible for returns, withdrawal refunds, or replacements.

  • DOA Qualification & Remedy: Only items arriving with zero/abnormally low voltage, severe initial cell imbalance, or unable to accept a charge qualify as DOA (multimeter/charger photo or video proof required). Batteries with normal measurable voltage that charge properly upon arrival are not defective. Verified DOA claims qualify for free replacement only with shipping covered by MIBANG (unless a replacement is unavailable or otherwise required by mandatory local law).

By placing an order, you confirm device compatibility, agree to test all items prior to welding, assembly, or flight, and accept our full Return & Warranty Policy (without affecting non-excludable statutory consumer rights).

 

   

ModelINR-21700-P42A
Capacity4200mAh
ChemistryRechargeable lithium-ion
Discharge45A listing rating; confirm operating limit
TerminalConfirm terminal configuration before order
Weight0.077 kg
DimensionsN/A

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PRODUCT SUPPORT

Frequently Asked Questions

What is the capacity of the Molicel P42A?+

The P42A has a typical capacity of 4200mAh and a minimum capacity of 4000mAh. The data sheet lists typical energy as 15.5Wh and minimum energy as 14.7Wh.

What is the discharge rating?+

The P42A is specified for 45A continuous discharge. Finished pack current should still be limited by thermal design, busbar/weld resistance, BMS ratings, fusing, and device requirements.

Can the P42A be used in battery packs?+

Yes. It is a strong candidate for high-power custom battery packs when cell matching, spot welding, BMS sizing, fusing, insulation, and thermal validation are properly engineered.

What temperature range is allowed?+

The P42A data sheet lists 0°C to 45°C for charging and -40°C to 60°C for discharging. High-current use should include temperature monitoring and derating.

What does 10mΩ AC impedance mean?+

It indicates low cell impedance, which helps support higher current delivery and reduced voltage sag. Real pack resistance also includes welds, nickel, busbars, wiring, holders, fuses, and BMS components.

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