BLACK + DECKER 700 Amp Jump Starter Box W/USB (J312B)
- Brand:
- BLACK+DECKER
- Model Number:
- J312B
- UPC:
- 814632011774
- EAN:
- 0814632011774
- Walmart SKU:
- 40573615
Key Takeaway
Market direction turned downward with current $74.99 representing 0.0% under standard pricing.
Third-Party Seller Summary
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$108.42 | |
|
Lowest Price
|
$69.99 | |
|
Most Recent Price
|
$69.99 |
- Average Price
- $79.64
- First Tracked
- Last Update
Walmart.com Summary
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$74.99 | |
|
Lowest Price
|
$74.99 | |
|
Most Recent Price
|
$74.99 |
- Average Price
- $74.99
- First Tracked
- Last Update
Price Analysis
Tracking History: We have tracked BLACK + DECKER 700 Amp Jump Starter Box W/USB (J312B) since 3/23/2026. The most recent price update was on Aug 24, 2026.
Price Range: Over the past 90 days, the price has ranged from $74.99 (lowest on 3/23/2026) to $74.99 (highest on 3/23/2026). The average price during this period is $74.99.
Current Trend: Walmart.com prices have ranged from $74.99 (Aug 24) to $74.99 (Aug 24) over the past 90 days. Current price is close to the 90-day average of $74.99.
Customer Insights: Rated 3.03/5 from 39 reviews.
Customer Reviews
39 reviewsCustomer Reviews
3.0
Based on 39 reviews
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Showing 10 of 39 reviews
Good to go.
Charged easily, started my dead-battery car on the first try. Have only had it a few days, but I have great hopes for it.
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Ok but really need to buy a more powerful model
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So far, so good!
I haven't used it yet, so not sure how it works, so far Good.
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ehhhh
need to charg fully to do something.. also have to be let on for a min b4 startin
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Works good but has to be recharged after every use only will Jumpstart once then needs to be recharged again
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i received a defective item now im having a hard time getting a replacement or refund
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Terrible product
I bought this a few years ago. It has to be constantly charging for it to be of use, so it is only useful from home. However on a more recent try - after it has been charging for weeks - it has zero battery and will not jump start my car. Do not waste your money or let yourself get stuck by purchasing this product.
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Not really a good product goes dead too easily
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Don't buy!!!!
Charged for 24 hours and STILL did not jumpstart battery. Will not charge phone or anything unless connected to a wall outlet. This thing is useless.. returning it tomorrow. DO NOT BUY!!!!! You've been warned.
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Pay for what you get.
Bought it six months ago.. worked fine frist few timess...now sometimes all the lights flash at once...and now I cant get it to charge up to boost my car...lol.... you pay for what you get.
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Price History
Recent Price Changes
Detailed price history for the past 90 days
Walmart.com Pricing
7 recordsWalmart.com prices have ranged from $74.99 (Aug 24) to $74.99 (Aug 24) over the past 90 days. Current price is close to the 90-day average of $74.99.
| Date | Price | Change | % Change |
|---|---|---|---|
| $74.99 | $+0.00 | +0.0% | |
| $74.99 | $+0.00 | +0.0% | |
| $74.99 | $+0.00 | +0.0% | |
| $74.99 | $+0.00 | +0.0% | |
| $74.99 | $+0.00 | +0.0% | |
| $74.99 | $+0.00 | +0.0% | |
| $74.99 | — | — |
No third-party seller price history available for this product in the past 90 days.