Battery Tender 021-0123 vs Battery Tender 022-0148-DL-WH
Battery Tender 021-0123
Battery Tender 022-0148-DL-WH
The short answer
Battery Tender 022-0148-DL-WH comes out ahead overall with 7.8/10 against 7.3/10 for the Battery Tender 021-0123. Battery Tender 021-0123 is stronger on ease of use & hookup and value. Battery Tender 022-0148-DL-WH is stronger on long-term maintenance performance, battery compatibility and safety, certifications & energy. At current verified prices, the Battery Tender 021-0123 costs about $147.04 less.
- Choose the Battery Tender 021-0123 if: Riders storing one 12V lead-acid motorcycle, ATV, snowmobile or mower battery who want the classic plug-in harness maintainer.
- Choose the Battery Tender 022-0148-DL-WH if: Collectors or households storing three or four 12V vehicles at once from one outlet.
Scores by criterion
| Criterion | Battery Tender 021-0123 | Battery Tender 022-0148-DL-WH |
|---|---|---|
| Long-term maintenance performance | 7.5Reliable float maintenance, but no low-voltage recovery. | 8.5Each bank runs its own float maintenance, so one bad battery doesn't affect the others. |
| Battery compatibility | 5.512V lead-acid only, with low current suited to powersports batteries. | 7.5Four 12V batteries; Amazon lists LiFePO4, but the manufacturer states lithium support inconsistently; no 6V. |
| Ease of use & hookup | 8.3The quick-disconnect harness makes it easy to plug in every season. | 7.8One outlet for four vehicles, with an LED per bank. |
| Durability, weather & cold resistance | 7.55-year warranty; some reports of failure after a few years; no IP rating. | 7.5IP65, but only a 2-year warranty. |
| Safety, certifications & energy | 7.0Spark-proof and reverse-polarity protected; the standard model is not compliant with CA/OR efficiency rules. | 8.5ETL/cETL listed and CEC/DOE compliant (manufacturer page). |
| Value | 8.2$37 with a 5-year warranty is good for a powersports owner. | 6.8Expensive up front, reasonable per bank; stock is volatile. |
Specifications
| Spec | Battery Tender 021-0123 | Battery Tender 022-0148-DL-WH |
|---|---|---|
| Max charge current | 0.75 A | 1.25 A |
| Battery voltages | 12V | 12V |
| Battery chemistries | Flooded, AGM, gel lead-acid | Flooded, AGM, gel lead-acid; lithium listed in specs (inconsistent) |
| Lithium (LiFePO4) mode | No | Yes |
| Charging banks | 1 banks | 4 banks |
| Charges deeply discharged (<1V) batteries | No | — |
| Ingress protection | — | IP65 |
| Warranty | 5 years | 2 years |
| Safety / efficiency certifications | — | ETL & cETL; FCC, ICES, CEC, DOE |
| Power source | AC wall outlet | AC wall outlet |
Battery Tender 021-0123
Pros
- Simple quick-disconnect harness
- 5-year warranty
- Compact
- Recommended by Car and Driver, The Drive and BestReviews
- Budget price
Cons
- 12V lead-acid only
- Can't recharge a dead battery
- Not sold in CA/OR
- Some buyers report failures after a few years
A straightforward, low-cost maintainer for one motorcycle, ATV or mower battery.
Full Battery Tender 021-0123 review →Battery Tender 022-0148-DL-WH
Pros
- Four independent 1.25A banks
- IP65 housing
- ETL/cETL listed, CEC/DOE compliant
- One outlet for a whole garage
- Recommended by Road & Track and The Drive
Cons
- Expensive overall, about $46 per bank
- Only a 2-year warranty
- Lithium support stated inconsistently
- Often sold out
A good fit for collectors and multi-vehicle households, and overkill for everyone else.
Full Battery Tender 022-0148-DL-WH review →Both products are part of our guide The Best Battery Maintainers / Trickle Chargers for Winter Storage of 2026, where you can see every pick, how we score and current prices from each retailer.