Swapping the internal lithium-polymer cell inside the Voyager III 7-inch tablet means opening the glued plastic housing, breaking the factory adhesive seal, and installing a compatible 3.7 V replacement rated around 2500–3000 mAh.7V single-cell pack rated near 5,000 mAh.
The connector sits beneath a metal motherboard shield rather than behind a user-accessible door, and the original part is no longer stocked by the manufacturer, so every practical fix comes from a third-party seller. A careful owner with basic pry tools, a low-heat source, and about 30 minutes can complete the job; a rushed attempt at the LCD bezel usually ends in a cracked digitizer that costs more than the tablet is worth.
This guide walks Voyager III owners through confirming their tablet, finding a compatible pack, and safely pulling the glued housing apart without snapping the digitizer.
Confirming You Own the RKT773P Before You Order Anything
The Voyager III shares its plastic shell and 7-inch footprint with at least two close cousins, and ordering a battery for the wrong one is the most common reason a swap never gets finished. The original cell hides beneath a metal bracket, so a wrong-fit pack cannot be returned once the bezel is cracked open. Two quick checks separate the RKT773P from the RCT773 and RCT6B03 before any money changes hands.
Two Ways to Verify the Exact Model
Open Settings, then About Tablet, and read the Model number line on the screen; it should print RKT773P, sometimes followed by a sub-revision suffix. Cross-check that string against the small white sticker behind the kickstand or printed along the rear housing near the FCC ID label. The FCC identifier for the Voyager III is 2AU5R-RKT773P, and that alphanumeric pair should appear under a removable flap on the back cover.
Numbers that look similar but are not the same include the RCT773, an older 7-inch Voyager without the “K,” and the RCT6B03, a 6-inch Voyager with a different screen cable layout. Both use cells of a different length, and their connectors sit closer to the corner of the motherboard.
The One Spec Worth Copying Down
Before cracking anything open, record the original battery’s rated capacity. Most RKT773P units shipped with a 5,000 mAh cell, but early production runs used a 4,800 mAh pack, and a few late ones pushed to 5,200 mAh. A replacement within 10 percent of the original number keeps the charge controller happy; a cell rated much higher can trigger false-capacity readings inside Android.
Choosing the wrong capacity can mask deeper failure modes, so it helps to understand what the cell actually does inside the tablet.
| Identifier | Where to Find It | What It Confirms |
|---|---|---|
| Settings → About Tablet → Model | On-screen string | Software-side model ID |
| FCC ID sticker | Rear housing, under kickstand | Hardware-side model ID |
| Battery label | On the cell itself (after opening) | Exact voltage, mAh, and connector type |
| Charging-port date code | Printed near the micro-USB port | Production batch window |
What the RKT773P Battery Actually Is and How It Fails
Inside the Voyager III sits a flat rectangular lithium-polymer cell glued directly to the back shell with a single strip of double-sided adhesive. The battery’s positive and negative leads end in a small white JST-style connector that plugs into a header on the motherboard, located under a sheet-metal cover held down by two Phillips screws. Understanding how that cell fails tells you when a swap will actually fix the problem.
The Common Failure Signs
A battery that needs replacement usually shows one of four symptoms: the percentage meter drops from 40 percent to 5 percent in under a minute, the tablet shuts down while still showing 15 to 25 percent remaining, the back cover feels slightly puffed or warm during light use, or the device only runs while the micro-USB cable is plugged in. Each of those points to a cell whose internal resistance has climbed past the charge controller’s safe threshold.
Why No Factory Replacement Exists
RCA discontinued consumer support for the Voyager III line years ago, and the brand’s current tablet catalog does not list the RKT773P. The factory cell, when one surfaces on a parts shelf, typically costs more than the tablet’s resale value. That gap is the reason every practical fix comes from a third-party seller on a parts marketplace or a tablet-battery specialist.
Sourcing a Compatible Replacement Battery on a Budget
The right replacement is a 3.7V lithium-polymer cell whose dimensions fall within roughly 2 mm of the original and whose capacity rating matches the stamped number within 10 percent. Three search strings tend to produce results: “RKT773P battery,” “Voyager III 7-inch battery,” and the part number printed on the original cell, which often starts with “PR” or “357” depending on the production batch.
| Source | Typical Price | What to Watch For |
|---|---|---|
| eBay (new old stock) | $10–$15 | Connector orientation in the listing photos |
| Marketplace third-party | $12–$18 | Listing that names the RKT773P in the title |
| Tablet-parts vendors | $15–$25 | Wiring harness length matching the original |
| Battery specialists | $18–$25 | Voltage stated as 3.7V, capacity within ±10% |
Avoid any listing showing a connector with reversed polarity or a wire harness longer than the original; both indicate a cell pulled from a different Voyager variant. Spend an extra minute reading the Q&A on each listing because sellers often post the actual model fitment there.
Confirming fitment on the listing saves time when the back cover is already off the device.
Tip: Photograph the original battery’s label with your phone before disconnecting it. The exact part number, voltage, and capacity printed there will save an hour of guesswork when matching against third-party listings.
Tools, Safety Prep, and the Danger Zones Inside the Voyager III
The tools list for this swap is short, and skipping any one of them raises the odds of a cracked screen. Lay everything on a clean, well-lit surface before powering the tablet down, and treat the lithium-polymer cell as a punctured-can hazard until it is safely removed.
The Minimum Tool Kit
- Plastic pry tool: A nylon spudger or guitar pick for separating the bezel without marking the plastic.
- Phillips 00 screwdriver: Needed for the two screws holding the metal motherboard shield.
- Hair dryer or low-heat heat gun: Set on low; the Voyager III’s plastic housing warps above 80 °C.
- Isopropyl alcohol (90% or higher): Softens the factory adhesive under the battery footprint.
- Anti-static wrist strap: Optional but cheap insurance against a static zap on the motherboard.
- Thin plastic card: Used to prop the digitizer open once the bezel seam gives way.
The Two Safety Steps Most Owners Skip
Drain the battery below 10 percent before opening the case, then power the tablet down fully. A charged Li-Po cell can vent and ignite if punctured, and a partially discharged one stays far cooler if a slip of the pry tool nicks it. Work on a non-metallic surface, and keep a small metal tin nearby in case the cell needs to be quarantined mid-job.
The Three Danger Zones
Three internal connectors are statistically likely to break on this model if the job is rushed. The LCD-to-frame adhesive seal tears if the bezel is pried without heat, the battery flex cable near the motherboard rips if the connector is pulled at an angle, and the Wi-Fi antenna lead near the top-right corner snaps off its U.FL snap connector when the back cover is lifted too far before the antenna cable is freed.
Knowing where each one sits before the first pry keeps the repair reversible.
Walking Through the RKT773P Teardown and Battery Swap
The swap takes about 30 minutes the first time and roughly 15 once the steps feel familiar. Move slowly around the bezel, and let the heat do the work of separating the factory adhesive rather than forcing the plastic.
Softening the Bezel Adhesive
Run a hair dryer on low around the entire seam between the glass and the plastic housing for about 90 seconds. The plastic should feel warm, not hot, to the touch. Insert a plastic pick into the seam at the bottom-right corner, where the gap between bezel and housing is widest, and slide the pick along the seam to break the adhesive bond.
Lifting the Digitizer Without Cracking It
Once the perimeter is free, lift the digitizer from the bottom edge and slide a thin playing card underneath to prop it open at a 15-degree angle. The LCD ribbon exits the screen on the bottom edge near the home button, so keeping the screen tilted rather than folded flat prevents the ribbon from kinking. Disconnect the digitizer ribbon from the motherboard with a spudger before removing the screen entirely.
Swapping the Cell
Unscrew the two Phillips screws holding the metal motherboard shield and lift the shield off to expose the battery connector. Pry the connector straight up with a spudger, never by the wires. Slide a few drops of isopropyl alcohol under the battery to weaken the adhesive holding it to the back shell, wait 30 seconds, then pry the cell up gently with a plastic tool.
Lay the new cell in the same orientation, press the connector down until it clicks, and reverse the steps to close the tablet.
Once the cell is seated, the controller has to learn its new voltage curve before the tablet is usable again.
Warning: Never bend, twist, or puncture the old or new Li-Po cell. A bend deeper than a few millimeters can break the internal separator layers and cause thermal runaway within seconds.
Calibration, First Power-On, and When DIY Is the Wrong Call
Once the tablet is reassembled, the charge controller needs a calibration cycle before the percentage meter reflects the new cell’s true capacity. Charge the tablet to 100 percent without interruption, let it sit on the charger for an extra 30 minutes, then run it down to auto-shutdown through normal use. Repeat that cycle once more, and the fuel gauge inside Android will lock onto the new cell’s voltage curve.
The Cost-vs-Repair Decision
A DIY swap on a working Voyager III lands at roughly $15 in parts plus an hour of time. Authorized repair shops generally refuse the model because no factory parts exist, and the few independent shops that will touch it charge $60 to $90 for the labor alone.
A replacement tablet of comparable specs sells new for $40 to $60, which means the swap is worth doing only when the rest of the device still works and the screen is intact.
When to Replace Instead of Repair
Stop and buy a new tablet if the digitizer is already cracked, the motherboard shows signs of liquid damage, or the original battery has visibly swollen. A swollen cell should never be reinstalled, and pressing it back into the housing risks rupturing the cell wall. A cracked digitizer means the screen has to come off for any repair, and the labor cost there typically exceeds the tablet’s value.
Bottom Line
Replacing the RKT773P’s battery is a $15, 30-minute job for a careful owner with the right plastic pry tools and a hair dryer. Verify the model twice before ordering, match the new cell’s voltage and capacity within 10 percent of the original, and never pry the bezel without first softening the factory adhesive.
Once the new cell is in, run two full charge cycles so Android learns its voltage curve, and the Voyager III should run unplugged for hours again.
FAQ
What kind of battery does the RCA RKT773P use?
The Voyager III uses a 3.7V single-cell lithium-polymer battery rated between 4,800 and 5,200 mAh depending on the production batch. The cell sits glued to the back shell and connects to the motherboard via a small white JST-style plug.
How do I confirm my RCA tablet is actually an RKT773P?
Open Settings, then About Tablet, and read the model number printed on-screen. Cross-check it against the FCC ID sticker behind the kickstand, which should read 2AU5R-RKT773P on a genuine Voyager III.
Is replacing the RKT773P battery cheaper than buying a new tablet?
A DIY swap runs $10 to $25 in parts, while a comparable RCA replacement tablet sells for $40 to $60. The swap is worth it only when the rest of the device works and the screen is undamaged, because a cracked digitizer or liquid damage makes the labor cost exceed the tablet’s value.
What tools do I need to open an RCA Voyager III tablet?
A plastic pry tool, a Phillips 00 screwdriver, a spudger, a hair dryer on low heat, and 90% isopropyl alcohol cover the job. An anti-static wrist strap and a thin plastic card for propping the digitizer reduce the risk of a cracked screen or static damage.
Can I use a higher-capacity battery in the RKT773P?
Yes, as long as the new cell stays within 10 percent of the original capacity rating and holds a 3.7V nominal voltage. Going much higher than the original 5,200 mAh rating can confuse the charge controller and produce inaccurate percentage readings on screen.
What happens if the original battery is swollen when I open the tablet?
Stop the repair and dispose of the swollen cell at a battery recycling drop-off rather than reinstalling it. A swollen lithium-polymer cell has damaged internal separators, and pressing it back into the housing can rupture the cell wall and cause a fire.
