Battery Tender Power Tender 8 A/2 A 12 V IP65 charger review

Battery Tender's Power Tender 8 A/2 A, SKU 022-1005-DL-WH, is the current replacement for its earlier 022-0337 charger. It remains a portable, single-output 12 V unit, but its exact manual and product page describe lithium support that the older model's documentation does not resolve. The current 022-1005 page also promotes weather resistance and a separate power-supply feature, yet each needs to be read alongside its manual rather than treated as an unrestricted capability.

Rate selection and battery charging

The manual body identifies P/N 022-1005 and lets the user select 2 A or 8 A. At 8 A, the charger provides the higher bulk rate; at 2 A it offers a lower-rate option. The manual describes automatic qualification, bulk charging, absorption and float maintenance after charging. That sequence can support a charge-then-maintain routine on one 12 V battery, not two independent batteries. The rates are alternatives, not a combined 10 A output, and neither is a time guarantee. The manual's approximate 60 Ah timing example reaches 80 percent; battery condition, starting state, temperature and the final absorption stage can change elapsed time.

The exact page says it is suited to 12 V batteries from 20 Ah to 150 Ah. That range is a manufacturer page statement, not a precise maximum repeated in the manual. Compare the battery's labeled capacity and recommended charge current with the exact SKU before use. For a smaller battery whose maker calls for low current, the selectable 2 A rate may still be too high; “selectable” does not mean every rate is appropriate for every battery.

Supported chemistry and an unknown BMS condition

The current product page and manual identify standard lead-acid, AGM and LiFePO4 selections. The manual describes a four-cell LiFePO4 configuration and recovery behavior for low-voltage batteries, but does not state the BMS requirement. A lithium label alone is not enough to establish fit: confirm the pack's chemistry, nominal 12 V rating, BMS status and allowed current with its manufacturer. The manual also describes standard lead-acid/AGM recovery thresholds. A recovery mode is not proof that an otherwise damaged battery will recover.

Battery Tender distinguishes this model from the earlier 022-0337 by adding lithium multi-chemistry support and other claimed upgrades. The older SKU is still a separate reference because its manual cover mentions lithium while its safety section says lead-acid only and its product FAQ directs lithium owners elsewhere. Do not borrow either model's chemistry claims or package contents from the other.

Weather and the 6 A supply feature are not settled

The 022-1005 product page advertises IP65 weather resistance. The linked PDF, whose filename says 022-0209 but whose first page and body identify P/N 022-1005 and manual revision 392-0454-R0, prints IP67 on a later page. Its safety instruction also says not to expose the charger to rain or snow. These statements do not provide a clear permission for outdoor mounting or water exposure, so this assessment leaves the ingress rating unresolved and follows the conservative instruction not to expose it to rain or snow. If a planned installation relies on a weather rating, request current written placement guidance for the exact SKU.

The product page lists a 6 A supply function and the manual includes a Power Supply selection, but that same manual says the charger is not intended to supply a low-voltage electrical system. That conflict prevents a responsible claim that it can power an arbitrary 12 V accessory. The finder therefore does not match it to the 12 V DC-device supply option. Ask the manufacturer about the exact device, load, connection method and mode before using this feature; do not connect a load based on the mode label alone.

Connections and practical checks

The product page describes a 120 V AC input, about 12.5 feet of total reach and a combination ring-terminal/alligator lead with a 15 A fuse. The manual says set the chemistry and charge rate before connection, keep the charging area ventilated, avoid contact with moving vehicle parts, and never charge a frozen battery. It also says marine batteries must be removed and charged ashore unless the charger is designed for on-board marine use. The illustrated and listed package contents should be checked on the exact seller listing before purchase; this assessment cannot confirm a seller's current box.

For one 12 V lead-acid, AGM or LiFePO4 battery where the battery maker permits the rate, 022-1005 combines a higher charging choice with automatic maintenance. Its constraints are a single output, an unstated lithium BMS requirement, a page-reported 20–150 Ah range, and unresolved environmental and supply-mode contradictions. Verify the exact model number and manual before buying. This research-based review is not a report of hands-on testing, ownership or real-world performance.