memory saver for car battery
Skip itSoft demand (-39.3% this quarter) — this niche doesn't clear our bar today.
Avg price
Great$21.55avg listing price — sweet spot $15–$100
Review moat
Great208.84avg incumbent reviews — the moat a new listing must climb
Price range
Great$8.87–$84.40cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Great58%top-5 brand share — no brand owns this niche
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Conversion
Okay3.8%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Okay4.5%return rate — above 6% kills the launch gate
Market size
Bad$93K$93K/yr · 113K searches
Growth
Bad-39.3%90-day search growth — must beat 0% to launch
Competition
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.Brands
21 falling
Sellers
48
Top-5 brand share
58%
Open market
35%
- EZRED15%
- MR CARTOOL14%
- VSTM13%
- Autel8%
- AUTOOL8%
- allsun8%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 25 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
EZRED MS4000 Automotive Memory Saver With Built In Charger Black
EZRED$84.404.5★473 rev
VSTM OBD II Vehicle ECU Emergency Power Supply Cable Memory Saver (3Meter) with Alligator Clip-On 12V Car Battery Cigarette Lighter Power Extension Socket
VSTM$16.024.5★1,648 rev
E60 OBD II Vehicle ECU Emergency Power Supply Cable 12V Car Memory Saver with 2 Alligator Clip&Battery Box
MR CARTOOL$15.914.4★222 rev
AUTOOL OBD II Car Memory Saver Cable 12V Vehicle ECU Emergency Power Supply Cable Digital Display OBD II Battery Leakage Detective Kit with 3A Fuse & 2 Alligator Clips
AUTOOL$22.744.1★115 rev
All-Sun GK504 Automotive Setting Keeper Auto Vehicle Computer Memory Saver 1 Pack
allsun$12.294.3★242 rev
Newest
by launch date
OBD II Connector Battery Memory Saver for All Vehicles Equipped with 16 Pin OBD II Adapter 9V Battery Powered
PUXWQT$25.660 rev
MR CARTOOL E50 OBDII Car Memory Saver 12V Vehicle ECU Emergency Power Supply Cable with 2 Alligator Clips
MR CARTOOL$8.8725 rev
OBD2 Car Memory Saver Cable with Voltage and Current Display Vehicle Emergency Power Supply Cable 12V withAuto Leakage Detection 2 Alligator Clips&3A Fuse
Mrcartool$21.524 rev
MOTOCOCHE OBD2 ECU Memory Saver Cable for Most Vehicles
MOTOCOCHE$21.599 rev
NYTKL OBD2 Car Memory Saver Protection Connector 12V Vehicle ECU Emergency Power Supply Cable with 2 Alligator Clips OBD II Digital Display Automotive Battery Power-Off Protector
NYTKL$9.547 rev
Trending
90-day click momentumOBD2 Car Memory Saver Cable with Voltage and Current Display Vehicle Emergency Power Supply Cable 12V withAuto Leakage Detection 2 Alligator Clips&3A Fuse
Mrcartool$21.524.6★
OBD II Connector Battery Memory Saver for All Vehicles Equipped with 16 Pin OBD II Adapter 9V Battery Powered
PUXWQT$25.660.0★
MR CARTOOL E50 OBDII Car Memory Saver 12V Vehicle ECU Emergency Power Supply Cable with 2 Alligator Clips
MR CARTOOL$8.874.3★
NYTKL OBD2 Car Memory Saver Protection Connector 12V Vehicle ECU Emergency Power Supply Cable with 2 Alligator Clips OBD II Digital Display Automotive Battery Power-Off Protector
NYTKL$9.545.0★
MOTOCOCHE OBD2 ECU Memory Saver Cable for Most Vehicles
MOTOCOCHE$21.594.5★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -39.3% search growth over the last 90 days.Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.6×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“I used the AA battery option which worked great”
“Excellent tool”
“Works as advertised”
“Easy to use”
“Worth the purchase”
“Works perfectly”
“Does the Job at hand”
“According to him, it made the whole job a lot easier and safer, so I'm going to trust him on that”
“works as designed”
“easy to connect”
What buyers complain about
“So the car battery was already not working properly”
“Make sure you have the clearance of the dashboard wouldnt fit on my OBD connection due to dashboard interference had to send it back”
“My car battery died while in the garage”
“the product didn't perform as expected”
“Makes a constant beeping noise confirming it's working”
“Seems a little cheap”
“If you are looking to protect your ECU data when changing a battery without first removing all the vehicle's fuses this is definately not the device for you”
“Not So Bright”
“the fuse blew before further damage”
“The tool is a little pricey for what it is”