MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger
- Battery Charging Unit
- 0.8 amps
- 1
- 1
A capable low-amperage maintainer for a battery that sits idle, with automatic desulfation and a 24-hour safety timer, but too slow to be a primary charger for a car battery.
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How it ranks among the 15 battery charging units we track
4.5★ across 16,500 Amazon ratings, Bayesian-smoothed toward the category average.
16,500 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
5,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 15 battery charging units we track - how the scorecard works · full battery charging units data report. Confidence: high - strong rating volume and complete data.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This is a 12V 800mA automatic maintainer, trickle charger, and desulfator for lead-acid, AGM, and gel batteries. Suited to small or seasonal batteries in motorcycles, ATVs, or lawn equipment rather than a full-size car battery.
MOTOPOWER pitches this as an all-in-one charger and desulfator, and the spec sheet backs that up: a 4-step program (initialization, bulk, absorption, float) plus a pulse desulfation cycle that runs automatically while charging. At 800mA, though, it is built for upkeep, not for reviving a battery that a shop charger would handle in an hour.
- 12V 800mA output
- 4-step automatic charge program
- 24-hour safety timer
- Overcharge, short circuit, and reverse polarity protection
Who it's for
Owners of motorcycles, ATVs, lawn tractors, or a second vehicle that sits for weeks at a time, who want the battery topped off and desulfated without manual switching. Not a match for anyone who needs to charge a large automotive battery quickly.
Strengths and trade-offs
Drawn from this product's published specifications.
- Automatic desulfation runs during normal charging
- Spark-free clamp connection
- Safe for long unattended maintenance
- Works across lead-acid, AGM, and gel batteries
- 800mA output is slow for small batteries only
- No jump-start capability
- No stated display or amp readout
Performance notes
The charger runs a 4-step cycle, climbing to 14.4V for the bulk charge and settling at a 13.6V float once the battery is full, with pulse-current desulfation happening in the background rather than as a separate step. A built-in 24-hour timer switches the unit into maintenance mode once voltage clears 14V, and output stays at zero in standby so there is no drain or spark risk when the clamps are connected.
Specifications
| Brand | Motopower |
|---|---|
| Model | MP00205A |
| Dimensions & fit | |
| Item Weight | 10.6 ounces |
| Item Dimensions D x W x H | 2 × 4.1 × 1.5 inches |
| Capacity & performance | |
| Output Voltage | 12 volts |
| Power & efficiency | |
| Amperage | 0.8 amps |
| Input Voltage | 110 volts |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Cars, Motorcycles, ATVs, RVs, Powersports, Boats |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | 2 years |
| Other details | |
| Number of Items | 1 |
| Number of Ports | 1 |
| Connector Type Used on Cable | clamp/alligator clip |
| Current Rating | 800 milliamps |
| Mfr Part Number | MP00205A |
| Specification Met | CE, FCC, ETL, RoHS, UL |
| BuiltIn Media | Battery Charger/Maintainer, Alligator Clamp Cable, Ring Terminal Cable, Instruction Manual |
How it compares
This product against the closest alternatives we track in battery charging units.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| MOTOPOWER MP00205A 12V 800mA Automatic Battery ChargerThis product | 4.5 / 5 | 16,500 | 4.6 / 5 |
| NOCO GENIUS5 5A 6/12V Smart Battery ChargerNoco | 4.6 / 5 | 21,200 | 4.8 / 5 |
| Battery Tender Junior 12VBattery Tender | 4.8 / 5 | 49,900 | 4.7 / 5 |
| Foval Automatic Trickle Battery Charger 12V 1000mA Smart Battery ChargerFoval | 4.6 / 5 | 14,700 | 4.5 / 5 |
| Schumacher Electric 15A Car Battery Charger & MaintainerSchumacher Electric | 4.6 / 5 | 9,500 | 4.5 / 5 |
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Questions about the Motopower MP00205A
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Will the MOTOPOWER MP00205A charge a full-size car battery quickly?
No. At 800mA it is designed as a maintainer and trickle charger, so it works slowly in the background rather than delivering a fast charge.
What battery types does the MP00205A support?
It is rated for 12-volt lead-acid, flooded, AGM, and gel cell batteries.
Does the desulfator need to be run separately?
No, the pulse desulfation happens automatically while the unit is charging, with no manual operation needed.